Possessive Nouns in English

Possessive nouns show ownership or a relationship of belonging between one thing and another. Learning how to form them correctly is essential for clear and accurate writing.

Basic Rules

• Singular nouns: Add 's (e.g., the cat’s tail).
• Plural nouns ending in "s": Add only an apostrophe (e.g., the students’ books).
• Plural nouns not ending in "s": Add 's (e.g., the children’s toys).
• Joint possession: Only the last noun takes the possessive form (e.g., Tom and Jerry’s apartment).
• Individual possession: Make all nouns possessive (e.g., Tom’s and Jerry’s cars).

Examples

1. The dog’s leash is red.
2. My parents’ house is in Boston.
3. The women’s team won the championship.
4. James’s laptop is broken. (Some style guides allow James’ as well.)

Common Mistakes to Avoid

❌ Its’ is never correct — “its” (no apostrophe) is possessive; “it’s” = “it is.”
❌ Don’t confuse pluralization with possession (e.g., apple’s vs. apples).

Practice Tip

Try rewriting these sentences using possessive nouns:

• The car that belongs to Sarah → Sarah’s car
• The project of the two engineers → the engineers’ project