Choosing between parties and party’s can be confusing because the two words look almost identical. However, the apostrophe changes the meaning and grammatical function completely. If you are unsure about parties vs party’s, the key is to determine whether you are talking about more than one party or showing possession.
Parties is the plural form of party. It means two or more parties, such as people, groups, organizations, or celebrations. For example, “Several parties attended the meeting” uses the word as a plural noun. By contrast, party’s is usually the possessive form of party, meaning something belongs to or is associated with one party. For example, “The party’s decision was final.”
Understanding the difference between plural nouns, possessive nouns, and apostrophe usage makes this spelling much easier to remember. You may also see party’s used as a contraction of “party is” in informal writing, although this use is less common.In short, use parties when you mean more than one party, and use party’s when showing ownership or writing “party is.”
Parties or Party’s: Quick Answer
The difference can be summarized in a simple rule:
| Form | Function | Meaning | Example |
| party | Singular noun | One party | The party arrived early. |
| parties | Plural noun | More than one party | The parties reached an agreement. |
| party’s | Singular possessive | Belonging to one party | The party’s decision was final. |
| party’s | Contraction | Party is / party has | The party’s ready. |
| parties’ | Plural possessive | Belonging to multiple parties | The parties’ representatives met. |
One spelling to avoid is partys. It is not the standard plural form of party.
The easiest rule to remember
Parties = more than one party
Party’s = one party’s possession or “party is/has”
Parties’ = possession by more than one party
That distinction works whether you’re writing about social events, political groups, business agreements, legal documents, or everyday situations.
What Does “Parties” Mean?
Parties is the standard plural form of party. It refers to two or more parties.
The meaning of party changes depending on the context. It can describe a celebration, a political organization, a person or group involved in a legal matter, or someone involved in a business agreement.
For example:
- We attended three birthday parties last month.
- Several political parties participated in the election.
- Both parties agreed to the terms.
- The contract identifies all participating parties.
- The two parties settled the dispute.
In each example, parties simply means more than one party. There is no possessive apostrophe.
Why Is the Plural “Parties” Instead of “Partys”?
The spelling follows a common English pluralization pattern.
When a noun ends in a consonant + y, the y usually changes to ies when the noun becomes plural:
- party → parties
- city → cities
- company → companies
- country → countries
- family → families
- story → stories
- library → libraries
That’s why partys is incorrect in standard English.
However, nouns ending in a vowel + y generally keep the y and simply add s:
- boy → boys
- day → days
- key → keys
- toy → toys
- journey → journeys
So the correct spelling is:
party → parties
Not:
party → partys
Does an apostrophe make a plural?
No. An apostrophe normally does not create an ordinary plural.
For example:
- ❌ Three party’s attended.
- ❌ Three partys attended.
- ✅ Three parties attended.
Apostrophes are generally used to show possession or to form contractions, which is why party’s has a completely different grammatical role.
What Does “Party’s” Mean?
Party’s is a valid form, but it does not normally mean “more than one party.”
It has two main uses:
- Singular possessive — something belongs to or is associated with one party.
- Contraction — a shortened form of party is or party has.
The context tells you which meaning is intended.
“Party’s” as a Singular Possessive
Use party’s when something belongs to, relates to, or is associated with one party.
The basic structure is:
one party + ’s + noun
For example:
- the party’s decision
- the party’s representative
- the party’s responsibility
- the party’s position
- the party’s lawyer
- the party’s property
Consider this sentence:
The party’s decision surprised everyone.
The decision is associated with one party, so party’s is the correct form.
You can often identify a possessive by asking “Whose?”
- Whose decision? → The party’s.
- Whose representative? → The party’s.
- Whose lawyer? → The party’s.
- Whose responsibility? → The party’s.
More examples of the singular possessive
- The party’s representative spoke first.
- The party’s position changed after the meeting.
- The party’s responsibility was clearly defined.
- The party’s lawyer reviewed the document.
- The party’s signature appears at the bottom of the page.
In every case, the apostrophe indicates a relationship between one party and something connected to it.
“Party’s” as a Contraction
There is another use of party’s that has nothing to do with possession.
It can be a contraction of:
- party is
- party has
For example:
The party’s ready.
Expand it:
The party is ready.
Therefore, party’s means party is in this sentence.
Here’s another example:
The party’s already started.
Expand it:
The party has already started.
In this sentence, party’s means party has.
How Can You Tell If “Party’s” Is a Contraction?
Try expanding party’s.
If party is makes sense, you have a contraction:
The party’s ready.
→ The party is ready.
If party has makes sense, it is also a contraction:
The party’s already left.
→ The party has already left.
If neither expansion works and the following noun describes something associated with the party, party’s is likely possessive:
The party’s representative arrived.
You wouldn’t say:
The party is representative arrived.
So party’s is possessive here.
Parties vs. Party’s vs. Parties’
This is where many writers get confused because all three forms look similar.
Parties = More Than One Party
Use parties when you simply mean multiple parties.
The parties signed the agreement.
There is no possession. The sentence simply refers to multiple participants.
Party’s = One Party’s Possession
Use party’s when something belongs to or is associated with one party.
The party’s representative signed the document.
Only one party is being described.
Parties’ = Multiple Parties’ Possession
Use parties’ when something belongs to multiple parties.
The parties’ representatives met yesterday.
The representatives are associated with multiple parties.
A quick comparison makes the difference clear:
| Meaning | Correct Form | Example |
| One party | party | The party arrived. |
| More than one party | parties | The parties arrived. |
| Belonging to one party | party’s | The party’s lawyer arrived. |
| Party is / party has | party’s | The party’s ready. |
| Belonging to multiple parties | parties’ | The parties’ lawyers arrived. |
Parties or Party’s in Different Contexts
The same grammar rule applies across different situations. What changes is the meaning of party.
Social Events
When party means a celebration or gathering, parties refers to multiple events.
We attended several birthday parties this summer.
But if you’re talking about something associated with one celebration, use party’s:
The party’s decorations were beautiful.
For multiple celebrations, the plural possessive is parties’:
The parties’ organizers compared their schedules.
Political Groups
In politics, party can refer to a political organization.
Several political parties participated in the election.
Here, parties is simply plural.
Now consider:
The political party’s platform attracted new supporters.
Only one political party is being discussed, so the possessive form is party’s.
If multiple political parties are involved:
The political parties’ platforms differed considerably.
The apostrophe comes after s because the noun is already plural.
Business and Contracts
Business writing frequently uses parties to describe people or organizations involved in an agreement.
Both parties agreed to the contract.
But when something belongs to one participant:
Each party’s obligations are listed below.
And when referring to something associated with multiple participants:
The parties’ obligations are outlined in the agreement.
This distinction is especially useful in professional and legal writing, where the number of parties involved can affect the meaning of a sentence.
Parties vs. Party’s in Legal Writing
Legal documents often use these forms because contracts and agreements involve clearly defined participants.
For example:
The parties agree to the terms of this contract.
Here, parties identifies multiple participants.
Now compare:
Each party’s obligations shall be performed according to the agreement.
Here, party’s is singular possessive because the sentence refers to the obligations of each individual party.
Finally:
The parties’ mutual obligations are described in Section 4.
Here, parties’ is plural possessive because the obligations relate to multiple parties.
This gives you a useful three-part pattern:
- parties = multiple participants
- party’s = something associated with one participant
- parties’ = something associated with multiple participants
Common Mistakes With Parties and Party’s
These words are easy to mix up, particularly when typing quickly. Here are some of the most common mistakes.
Mistake 1: Using “Party’s” as the Plural
Incorrect:
Several political party’s participated.
Correct:
Several political parties participated.
Why? The sentence refers to multiple political groups. It does not show possession.
Mistake 2: Using “Parties” for Possession
Incorrect:
The parties decision was unexpected.
Correct:
The party’s decision was unexpected.
If one party made the decision, use party’s.
If multiple parties made or shared the decision, use:
The parties’ decision was unexpected.
Mistake 3: Confusing Party’s With Parties’
Compare:
The party’s representative spoke.
One party has a representative.
The parties’ representatives spoke.
Multiple parties have representatives.
The position of the apostrophe matters:
- party’s → singular possessive
- parties’ → plural possessive
Mistake 4: Assuming Every Apostrophe Shows Possession
An apostrophe can also indicate a contraction.
The party’s ready.
Here, party’s does not show ownership. It means:
The party is ready.
Likewise:
The party’s already begun.
Here, party’s means:
The party has already begun.
Context determines the meaning.
How to Choose Between Parties and Party’s
When you’re unsure which form to use, follow these simple steps.
Step 1: Are You Talking About More Than One Party?
If yes, use parties.
The two parties reached an agreement.
Step 2: Does Something Belong to One Party?
If yes, use party’s.
The party’s representative signed the document.
Step 3: Can You Replace “Party’s” With “Party Is”?
If the sentence still makes sense, party’s is a contraction.
The party’s ready.
→ The party is ready.
Step 4: Can You Replace It With “Party Has”?
If the sentence works with party has, party’s is again functioning as a contraction.
The party’s already arrived.
→ The party has already arrived.
Step 5: Does Something Belong to Multiple Parties?
Use parties’.
The parties’ agreement was finalized.
This quick process covers most situations where you might hesitate between parties, party’s, and parties’.
Parties or Party’s: Practical Examples
Here are some everyday examples to make the distinction easier to remember:
| Sentence | Correct? | Why? |
| The parties signed the agreement. | ✅ | More than one party |
| The party’s signature appears below. | ✅ | One party’s signature |
| The parties’ signatures appear below. | ✅ | Multiple parties’ signatures |
| Three party’s attended. | ❌ | The correct plural is parties |
| The party’s ready. | ✅ | Contraction of “party is” |
| The party’s already started. | ✅ | Contraction of “party has” |
| The partys agreed. | ❌ | Parties is the correct plural |
| The party’s representative called. | ✅ | One party’s representative |
| The parties’ representatives called. | ✅ | Representatives of multiple parties |
The important thing is not to memorize one spelling in isolation. Instead, look at the grammatical relationship in the sentence.
A Simple Ownership Test
If you’re stuck, ask yourself one question:
Does something belong to the party?
If yes, decide whether there is one party or more than one.
One party
Use:
party’s
The party’s lawyer called.
Multiple parties
Use:
parties’
The parties’ lawyers called.
No possession
If you simply mean more than one party, use:
parties
The parties called.
This simple test can solve most parties or party’s questions in seconds.
A Quick Memory Trick
You don’t need to memorize a complicated grammar rule. Remember these three lines:
Parties = more than one
Several parties attended.
Party’s = one party’s OR party is/has
The party’s representative arrived.
The party’s ready.
Parties’ = multiple parties’
The parties’ representatives met.
Notice where the apostrophe goes in parties’. The word is already plural, so the apostrophe comes after the s.
Conclusion
The difference between parties and party’s comes down to number and possession. Parties is the plural form of party, while party’s is normally the singular possessive form. The apostrophe is important because it changes the grammatical role of the word.Use parties when referring to two or more people, groups, events, or celebrations. Use party’s when something belongs to one party, such as “the party’s leader” or “the party’s decision.” You may also use party’s as a contraction for “party is” when the context allows it.Once you identify whether you need a plural noun, possessive noun, or contraction, choosing the correct spelling becomes straightforward. Remember: parties = more than one party, while party’s = belonging to one party or “party is.”
FAQs
Is “parties” or “party’s” correct?
Both are correct, but they have different meanings. Parties is the plural form of “party,” while party’s usually indicates possession.
What is the plural of party?
The plural of party is parties. For example: “Three parties attended the discussion.”
What is the possessive form of party?
The singular possessive form is party’s. For example: “The party’s policy was announced yesterday.”
Is “party’s” ever a contraction?
Yes. Party’s can sometimes be a contraction of “party is,” although this construction is relatively uncommon. The meaning should be clear from context.
What is the difference between parties and party’s?
Parties means more than one party. Party’s generally means something belongs to one party or represents the contraction “party is.”
Is “partys” correct?
No. The standard plural spelling is parties, and the singular possessive form is party’s. “Partys” is not the standard spelling.
How do you use parties in a sentence?
You can write: “The two parties reached an agreement.” Here, parties refers to more than one group.
How do you use party’s in a sentence?
You can write: “The party’s leader gave a speech.” Here, party’s shows that the leader is associated with one party.
Should I use an apostrophe for plurals?
Generally, no. Apostrophes do not normally form plurals. Therefore, the plural of “party” is parties, not “party’s.”
Is “the parties’” also correct?
Yes. Parties’ is the plural possessive form. It means something belongs to or is associated with two or more parties, such as “The parties’ agreement was signed yesterday.”
