Lemos is a Portuguese-language surname. It can be also Greek (Λεμός).

Notable people by that name include:

• Álvaro Lemos (born 1993), Spanish professional footballer
• Amanda Lemos (born 1987), Brazilian mixed martial artist
• Ana Cláudia Lemos (born 1988), Brazilian track and field athlete
• Daniel Lemos (born 1990), Brazilian footballer
• Gaspar de Lemos (15th century), Portuguese explorer
• Gerard Lemos, Baron Lemos (born 1958), British-Indian social policy researcher, author and life peer
• Manuel Gayoso de Lemos (1747–1799), Spanish governor of Louisiana
• Norberto Lemos (born 1964), Brazilian footballer and coach
• Tiago Lemos (born 1977), Portuguese football player
• Waldemar Lemos (born 1954), Brazilian football head coach

• Costas Lemos (1910–1995), Greek billionaire shipping tycoon
• Lemos family, prominent Greek ship owning family
• Michael Lemos (born 1955), London-based Greek heir