A waterproof connector (1) comprises: retainers (50) and (60) which include an inner receiving portion (91) formed on opposite surfaces (51) and (61) which face a wiring substrate (30); and a first seal member (70) which is filled in at least the inner receiving portion (91). An outer receiving portion (92) is formed on outer surfaces (55) and (65) and side surfaces (50d), (50e), (60d), and (60e) of the retainers (50) and (60). Defective portions (58) and (68), which pass from the outer surfaces (55) and (65) to the inner receiving portion (91), are formed in the retainers (50) and (60). The inner receiving portion (91) communicates with the outer receiving portion (92) at the side surfaces (50d), (50e), (60d), and (60e). The first seal member (70) includes: an inner seal portion (70a) which is received in the inner receiving portion (91); and; a defective seal portion (70d) and a side seal portion (70c) which are formed integrally with the inner seal portion (70a). The defective seal portion (70d) and the side seal portion (70c) reach the outer surfaces (55) and (65).