{{#invoke:Side box|main}} 's may refer to:

• 's, an ending used to form the possessive of English nouns and noun phrases
• 's, a contraction of the English words is and has
• 's, a form of the English plural ending, written after single letters and in some other instances (see also Greengrocers' apostrophes)
• 's, a contraction of the old Dutch genitive article des, appearing in place names such as 's-Hertogenbosch