Baas may be:
A Dutch word for supervisor/leader/master, from which the American word "boss" is derived.
Balduin Baas (1922–2006), German actor
David Baas (born 1981), American football center
Gilberto Keb Baas (born 1977), Mexican boxer
Heinz Baas (1922–1994), German football player and manager
Ian Baas (born 1982), American race car driver
Jan Baas (born 1950), Dutch politician
Johann Hermann Baas (1838–1909), German medical historian
Lourens Baas Becking (1895–1963), Dutch botanist and microbiologist
Maarten Baas (born 1978), Dutch industrial designer
Pieter Baas (born 1944), Dutch botanist
Stien Baas-Kaiser (born 1938), Dutch speed skater
Baas Wikipedia (Text) CC BY-SA