Manoharan is a surname. Notable people with the surname include:
K. Manoharan, Indian politician Kiru Manoharan, one time ASB Tennis Centre Court player M. Manoharan (born 1961), Malaysian lawyer Nanjil K. Manoharan (1929–2000), Indian politician R. Manoharan, Indian politician T. N. Manoharan (1956–2025), Indian accountant Vincent Manoharan, Indian activist Vinoop Manoharan (born 1992), Indian cricketer