Wave machine may refer to:

• Wave power, a machine that uses the motion of ocean waves to generate electricity
• Wave pool, a machine that generates waves in a pool to simulate the ocean
• Shive wave machine, a wave generator that illustrates wave motion using steel rods and a thin wire
• Column wave, a theatrical device used to simulate the look of the ocean on stage
• Permanent wave machine, a machine that curls or straightens hair for a permanent wave hairstyle