Warren Russell Oatman (February 19, 1905 – October 25, 1964) was a Canadian ice hockey player.

Oatman played 121 games in the National Hockey League with the Detroit Cougars, Montreal Maroons and New York Rangers between 1926 and 1929.

Oatman's time in the NHL ended when he was traded by the Rangers to the minor-league Hamilton Tigers in October 1929.

While travelling with Niagara Falls Cataracts team-mate Steve Yankoski for a game, the car went off the road to avoid a head-on collision but crashed into a hydro pole.

Oatman suffered a broken left leg, which required surgery and a permanent steel plate.