Peder Oluf Pedersen, Danish physicist and engineer (b. 1874)
Peder Oluf Pedersen (19 June 1874 – 30 August 1941) was a Danish engineer and physicist. He is notable for his work on electrotechnology and his cooperation with Valdemar Poulsen on the developmental work on Wire recorders, which he called a telegraphone, and the arc converter known as the Poulsen Arc Transmitter.

Pedersen became a professor of telegraphy, telephony and radio in 1912.

He became principal of the College of Advanced Technology (Den Polytekniske Læreanstalt) in 1922, a title he held until his death. He was a Fellow of the American Institute of Electrical Engineers and was a member of the British Institution of Electrical Engineers. In 1915 he became a Fellow of the Institute of Radio Engineers.