Abstract: A safety holster for a handgun comprises a holster adapted for receiving a barrel and receiver portion of a handgun with a handgrip and hammer portion extending outward of the holster. The holster has an outer surface and a reverse surface with a belt loop attached to the reverse surface of the holster for enabling the holster to be carried on a person's belt. A flexible strap has one end attached to the reverse surface of the holster and a second end extendable over at least the hammer portion of the handgun to the outer surface. A two-member locking device has a first, fixed member attached to the outer surface of the holster and a second, releasable member attached to the second end of the strap. The releasable member comprises at least two spaced cross-pieces integrally formed within a slotted area of the releasable member and the strap is looped over and around the cross-pieces so that the releasable member is adjustably coupled to the strap.