145 may refer to:
145 (number), a natural number
AD 145, a year in the 2nd century AD
145 BC, a year in the 2nd century BC
145 (dinghy), a two-person intermediate sailing dinghy
145 (South) Brigade, a regional brigade of the British Army that saw active service in both the First and the Second World Wars
145 (New Jersey bus), a New Jersey Transit bus route
145 Adeona, a main-belt asteroid
Alfa Romeo 145, a 3-door hatchback
Honda 145, a compact car