ABC1 is the former name of the main television channel from the Australian Broadcasting Corporation in Australia.
ABC1 may also refer to:
- ABC1 (British and Irish TV channel), a defunct British television channel
- U.S.–British Staff Conference (ABC–1), a military plan during World War II
- ABC1, a group of NRS social grades used in the United Kingdom to refer to the middle classes
- ABC-1, the name of the ABC Eastern Time Zone C-Band satellite feed.
- ABCA1, a protein which in humans is encoded by the ABCA1 gene