Nicolau is a surname that occurs in multiple cultures and languages, including Portuguese, Romanian, Catalan, and Greek, and which is derived from the given name Nicolau, a variant of Nicholas, or is a variant spelling of Nicolaou.^[1] The name may refer to:

• Alexandru Nicolau (1889–1937), Romanian political activist
• Antoni Nicolau (1858–1933), Spanish composer
• Christian Nicolau (born 1947), French athlete
• Cristina Nicolau (born 1977), Romanian athlete
• Dimitri Nicolau (1946–2008), Italian musician of Greek origin
• Enric Mas Nicolau (born 1995), Spanish cyclist
• George Nicolau (1925–2020), American arbitrator of Greek origin
• Ivo Nicolau (born 1983), Portuguese footballer
• Jackson Nicolau (born 1987), Australian footballer of Greek origin
• Melisa Nicolau (born 1984), Spanish footballer
• Nick Nicolau (1933–2014), American football coach
• Nicky Nicolau (born 1983), English footballer of Greek Cypriot origin
• Serghei Nicolau (1905–1999), Romanian espionage chief
• Ștefan Gh. Nicolau (1874–1970), Romanian physician, dermato-venerologist
• Ștefan S. Nicolau (1896–1967), Romanian physician, inframicrobiologist

• All pages with titles beginning with Nicolau
• All pages with titles containing Nicolau
• Nicola (name)
• Nicolae (name)
• Nicolaj
• Nicolay