A Sheriff's Department statement says deputies responded to a residence in Calabasas at 12:48 a.m. Monday and determined the resident and his ex-girlfriend were involved in a domestic dispute, and the resident was arrested for misdemeanour domestic battery.
The department subsequently identified the resident as Johnson, who posted bond at 9:15 a.m. and was released.
In the NFL, Johnson played for the New York Jets, Tampa Bay Buccaneers, Dallas Cowboys and Carolina Panthers.
He's currently an ESPN commentator and analyst. ESPN says it's aware of the arrest and is looking into the matter.
A call to Johnson's agent was not immediately returned.