The tamper evident trigger sprayer bottle cap/bottle neck assembly comprises: a trigger sprayer including a body and a fluid intake portion, the fluid intake portion having retaining structure protruding laterally outwardly therefrom for retaining an open top bottle cap thereon; a bottle cap comprising a top portion, a cylindrical wall depending from the top portion, and a tamper evident ring depending from the cylindrical wall, the top portion having a central opening therein, the fluid intake portion extending upwardly through the central opening and the cap being supported on the retaining structure; sealing structure associated with the retaining structure and the bottle cap for effecting a seal between them when the bottle cap is mounted on a bottle neck to a fully connected position, the tamper evident ring being frangibly connected to the cylindrical wall by a plurality of spaced apart easily breakable webs or filets molded to and extending between the tamper evident ring and the cylindrical wall of the open top bottle cap, having engaging means for engaging structure on a bottle neck, being a continuous ring without a pull tab, and being mounted to a fully connected position on the bottle neck when the bottle cap is mounted on a bottle neck to a fully connected position, and the cylindrical wall having bottle neck connecting structure on the inside thereof engagable with cap connecting structure on a bottle neck; and a bottle neck comprising: a short tubular portion at the top of a bottle or similar container or receptacle and having an outer generally cylindrical surface extending to a top annular edge; cap connecting structure on the outer surface just below the top edge; and engaging structure below the cap connecting structure for engaging the engaging structure on the tamper evident ring.
