Robot fetishism, (androidism) (also ASFR or technosexuality) is a fetishistic attraction to humanoid or non-humanoid robots; also to people acting like robots or people dressed in robot costumes. A less common fantasy involves transformation into a robot. In these ways it is similar to agalmatophilia, which involves attraction to or transformation into statues or mannequins.

Robot fetishism can be viewed as a form of erotic anthropomorphism. When transformation or roleplaying is involved it can be thought of as a form of erotic objectification.

By its enthusiasts, robot fetishism is more commonly referred to by the initials ASFR. This initialism stems from the now defunct newsgroup alt.sex.fetish.robots. Many devotees of this fetish refer to themselves as technosexual, or as "ASFRians".