Cotan may refer to:

• Cotangent, abbreviated as cotan, a trigonometric function

People with the surname

• Alin Coțan (born 1982), Romanian footballer
• Antonio Cotán (born 1995), Spanish footballer
• Imron Cotan (born 1954), Indonesian diplomat
• Juan Sánchez Cotán (1560–1627), Spanish painter of still lives

See also

• Kotan (disambiguation)

This disambiguation page lists articles associated with the title Cotan.
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