Bill Nye (born November 27, 1955), popularly known as Bill Nye the Science Guy, is an American science educator, television presenter, and mechanical engineer who previously worked as a mechanical engineer at Boeing.

He is best known as the host of the Disney/PBS educational science series Bill Nye the Science Guy from 1993 to 1998, and for his many subsequent appearances in popular media as a science educator. He also appeared in the Epcot attraction Ellen's Energy Adventure. He also played a science teacher in Principal Takes a Holiday. He voices Professor Rubicon in Miles from Tomorrowland. He voiced an animated version of himself in Penn Zero: Part-Time Hero and Future-Worm!.