Colaco or Colaço is a Portuguese surname. Notable people with the surname include:
Armando Colaco (born 1953), Indian football manager Bruno Colaço (born 1991), Indian footballer Edwin Colaço (1937–2025), Indian Roman Catholic prelate and bishop Jorge Colaço (1868–1942), Portuguese painter Joseph Colaco, Indian structural engineer Liston Colaco (born 1998), Indian footballer Maria Rosa Colaço (1935–2004), Portuguese children's writer and journalist Nicolau Colaco (born 1984), Indian footballer Nicole Colaco (born 1970), Canadian field hockey player