The portable purse strap hook is slidably and removably mounted on a purse strap. The portable purse strap hook includes a flexible sheet having at least one releasable fastener attached thereto for releasably fastening laterally opposed ends thereof to form a sleeve slidably disposed on the purse strap. A hook is pivotally secured to the inner surface of the flexible sheet. The hook is pivotal between a stored position within the sleeve and a position extending from the sleeve so that the hook may be used to hang the purse from a stationary support.