Old Faithful is a geyser within Yellowstone National Park.
Old Faithful may also refer to: Old Faithful (film), a 1935 film "Old Faithful" (rugby league song) "Old Faithful" (Hope & Faith episode) "Old Faithful", a 1934 short story by Raymond Z. Gallun "Old Faithful", a 1955 story from The Railway Series book Four Little Engines Old Faithful, Graeme Obree's bicycle
See also Old Faithful Historic District, a historic district in Yellowstone National Park Old Faithful Inn, a hotel in Yellowstone National Park Old Faithful of California, a geyser near Calistoga, California