Check may refer to:

• Cheque (spelled check in American English), an order for transfer of money
• Bill (payment), also sometimes referred to as a check
• Tick (checkmark), a mark used for verification or notation
• Rain check, an agreement to provide to a customer an item that a merchant has run out of
• Checking (ice hockey), the act of physically keeping an opponent restrained
• Declining to bet in a game of poker
• Poker chip, less commonly referred to as a check
• A small crack in the glass, also known as a check, in the glass container industry
• Tartan, a checked patern in fabric and weaving

In chess and other boardgames of the chaturanga family, check may refer to:

• Check (board game), a threat to capture the king or general
• Cross-check, in chess, a check played in reply to a check
• Checkmate, a situation in which the king is checked and there is no way to meet that threat

チェック