Abstract: A safety belt buckle comprises a latch portion including two parallel plates, locking elements in the form of rolls, members for stopping the rolls in latched and unlatched positions of the buckle in the form of a wedge and plate-like pushers respectively, a member for unlatching the buckle fashioned as a button, and a catch part in the form of a prong having a slot for receiving the safety belt and a portion insertable into the shell. The plates of the shell have slots for the rolls to move therein and slots wherethrough the wedge is connected to the button.