A fastener for accessories includes a pair of a female part (1) and a male part (2). The female part (1) includes a holding frame body (12), a holding space (13) which is surrounded by the holding frame body (12), and an opening part (14) which can close elastically. The female part (1) further includes a guide part (15) for insertion at an outer side of the opening part (14). The male part (2) includes a circular locking frame body (22), a locking accepting part (25) which is surrounded by the locking frame body (22), and a locking part (21) which can close elastically at a tip of the locking frame body (22). The male part (2) further includes a guide part (23) for engagement/disengagement at an inner side of the locking part (21) and an outer shell on a periphery of the locking frame body (22).