Chum may refer to:
- Chum, a Social Network, Chum.com is a unique Social networking service to find a virtual friend or Chum.
- Chum salmon, a kind of salmon (Oncorhynchus keta), native to the northern Pacific and adjacent waterways
- Chum (tent), a nomadic tent, of the Yamal-Nenets reindeer herders in Western Siberia
- Chumming - a bait (luring substance) for fish, including sharks
- Chums (paper), a British boys newspaper published from 1892–1941
- Chums Scout Patrols, early Scouting groups started through the Chum paper
- Chums, a segment on the TV series SMTV Live, parodying the American sitcom Friends
- Chum, the old German name of the Italian city Como
- The Chum Bucket, a fictional restaurant on the animated television series SpongeBob SquarePants
- CHUM:
- CHUM Limited, a defunct Canadian media company (now owned by Bell Media)
- CHUM Radio, a Canadian radio broadcasting company (now owned by Bell Media as Bell Media Radio)
- 1050 CHUM (AM), a Toronto radio station
- 104.5 CHUM-FM, a Toronto radio station
- Centre hospitalier de l’Université de Montréal, a university hospital network in Montreal