The Biggest Loser: Couples

The Biggest Loser: Couples is the fifth season of the American reality television program The Biggest Loser. The season premiered on January 1, 2008 with ten overweight couples competing for the title of The Biggest Loser. Alison Sweeney continued to host, while Bob Harper and Jillian Michaels returned as trainers.

Each contestant entered with a teammate, however the winner of the grand prize was an individual. One team - the Blue Team - were strangers prior to entering the competition, but all other teams were comprised of two people who previously knew each other.

This season was preceded by Season 4 and followed by Season 6: Families on September 16, 2008.