Single may refer to:
In music:
- Single (music), a song release
- "Single" (Natasha Bedingfield song)
- "Single" (New Kids on the Block and Ne-Yo song)
- Single coil, an electromagnetic guitar pickup type
In sports:
- Single (baseball), the most common type of base hit
- Single (cricket), point in cricket
- Single (football), Canadian football point
- Single scull, a rowing boat propelled by a single rower with two oars
In other fields:
- "Single", a slang term for a one dollar bill.
- Single, a single-unit type of apartment dwelling also known as a studio
- "Single", in Dublin and other parts of Ireland, a single portion of chips, especially as part of the popular take-away meal fish and chips.
- Single (bet), a type of bet made on one selection
- Single (locomotive), a steam locomotive with a single pair of driving wheels
- Single-cylinder engine, an engine with one piston
- Single person, a person who is not married; usually refers today to someone who is neither married nor in a sexual relationship
- Single precision, a computer numbering format that occupies one storage location in computer memory at a given address