Whitesides is an English surname. Notable people with the surname include:
Dan Whitesides (born 1977), American drummer
George M. Whitesides (born 1939), American chemist and academic
George T. Whitesides, American businessman
Jacob Whitesides (born 1997), American singer-songwriter
Kevin Whitesides (born 1964), American racing driver
Sue Whitesides, Canadian mathematician and computer scientist
Tyler Whitesides, American writer