Simon Edward Pulsifer (born September 11, 1981) is a Canadian contributor to the English-language Wikipedia whose prolific participation made him a "minor media celebrity".

[1] Pulsifer became an active contributor to the English Wikipedia on December 10, 2001[2] under the username SimonP, just after hearing about the site from The New York Times Magazine.

[6] Pulsifer's productivity at Wikipedia has made him the subject of human interest stories in the local press.

[11] On February 6, 2011, Wikimedia's Executive Director Sue Gardner presented him with a token of appreciation from the Wikipedia community for being one of their most prolific writers and editors.

[13] In June 2000, he graduated from Lisgar Collegiate Institute,[14] and went on to study history at the University of Toronto, Victoria College.