BB5 may refer to:
BB5, a postcode district in the BB postcode area Blake Bortles, American football quarterback who wears number 5 Big Brother 5 (disambiguation), a television programme in various versions Bigg Boss 5 (disambiguation), Indian versions of the TV franchise BB5 (film), a 2017 Indian Kannada-language film
See also BB-5, the USS Kearsarge, a pre-dreadnought battleship BB(5), notation representing the fifth busy beaver