A person who rides a surfboard. / A person who surfs the Internet. / (obsolete) A duck, the surf scoter (Melanitta perspicillata).

plural of surfer

(informal) An elderly person who regularly uses the Internet.

Someone who engages in shoulder surfing.

plural of shoulder surfer

A person who illegally rides on the top of an elevator car, outside the actual confines of the car.

plural of elevator surfer

Someone carried by a crowd, in crowd surfing.

plural of crowd surfer

plural of silver surfer