A belt buckle (1) for a seatbelt system including a spring-loaded lock mechanism (3) having a securing pin (2) for locking a belt tongue (5) inserted into a buckle housing (4), a pushbutton (7), a frame (6) which is displaceably guided on the buckle housing (4) under spring effect to impact upon the lock mechanism (3) for unlocking of the belt buckle (1). In the frame (6) a recess (9) including at least one contact region (8) is formed for guiding and/or retaining the securing pin (2) contacting the contact region (8) upon an actuation of the belt buckle (1). At least one contact region (8) of the recess (9) formed on the pushbutton (7) having a noise-damping element (10, 11) for reducing noise emission in the region where the securing pin (2) abuts against the pushbutton (7).