The present invention relates to a seat for a means of transport and to an associated means of transport. The seat (12) comprises a backrest (14) defining a first surface (18) and a second surface (20), the second surface (20) comprising an opening (32), the backrest (14) comprising a table (24) movable between a folded position and a deployed position, in which, in the folded position, the table (24) closes the opening (32), and in the deployed position, the opening (32) is unobstructed, the backrest (14) comprising locking means (26) operable between a locked configuration and an unlocked configuration, the locking means (26) being configured to hold the table (24) in its folded position in the locked configuration and to allow the table (24) to move towards its deployed position in the unlocked configuration, characterized in that the locking means (26) comprises a lock capable of being actuated to operate the locking means (26) between the locked configuration and the unlocked configuration.