Derp

Derp may refer to:


 * Mr. Derp, a minor character in South Park, a show that popularized the Internet slang word derp
 * Drug Effectiveness Review Project
 * D.E.R.P., a robot character seen in the Fresh Beat Band of Spies episode "Dance Bots"
 * "Derp", a track released in 2014 by Bassjackers and MAKJ
 * Derp (hacker group), also known as Derptrolling, a former hacker group