List of Famous people born in May

Andrea Levy Soler is a Spanish People's Party (PP) politician. She served in the Parliament of Catalonia from 2015 to 2019, and on the City Council of Madrid from 2019.

Egoi Martínez de Esteban is a Spanish former professional road bicycle racer, who competed as a professional between 2001 and 2013. In his first Tour de France, Martínez finished 41st overall at the 2004 Tour de France.

Royston William Langdon is the English lead singer and bassist of the English-American glam rock band Spacehog.

Conrad Arnold Elvehjem (May 27, 1901 – July 27, 1962) was internationally known as an American biochemist in nutrition. In 1937 he identified two vitamins, nicotinic acid, also known as niacin, and nicotinamide, which were deficient directly in human pellagra, once a major health problem in the United States. Collectively, nicotinic acid and nicotinamide are termed vitamin B₃ and are now understood to be precursors of nicotinamide adenine dinucleotide.

Ioan Mackenzie James FRS is a British mathematician working in the field of topology particularly in homotopy theory.

Peter Reid is a Canadian elite level triathlete. He has gained fame mainly by winning ten Ironman triathlons, including winning the Ironman World Championship three times. During his career as a triathlete Reid lived and trained in Victoria, British Columbia. In June 2006, Reid announced that he was retiring from triathlon. He is now a float plane pilot on Canada's west coast. Reid was inducted into Canada Sports Hall of Fame in 2011, the BC Sports Hall of Fame in 2013 and the Greater Victoria Sports Hall of Fame in 2010.