Dallas Cowboys RB -- Stole 'Gucci Guilty Black' Cologne ... Cops Say

Dallas Cowboys running back Joseph Randle stole a tester bottle of Gucci Guilty Black cologne from a Dillard's department store Monday night ... TMZ Sports has learned.

Randle -- who's making nearly $500k this year -- was arrested for shoplifting ... and our sources say he's accused of boosting the cologne AND a 2-pack of black Polo underwear.

We're told store security footage captured the whole thing.

Randle was released from custody early Tuesday morning.