Monk or The Monk is a nickname of:
Monk Boudreaux (born 1941), American singer and R&B musician
Monk Cline (1858–1916), American baseball player
Monk Dubiel (1918–1969), American Major League Baseball pitcher
Monk Eastman (1875–1920), founder and leader of a powerful New York City gang
Gerry Hutch (born 1963), Irish bank robber known as "The Monk"
Antonin Magne (1904–1983), French cyclist who won the Tour de France in 1931 and 1934, nicknamed "The Monk"
Edward Malloy (born 1941), 16th president of the University of Notre Dame
Monk McDonald (1901–1977), American college athlete, head basketball coach and urologist
Monk Montgomery (1921–1982), American jazz bassist
Monk Sherlock (1904–1985), American Major League Baseball player in the 1930 season
Claude Simons, Sr. (1887–1943), American sports coach at Tulane University
Monk Williams (1945–2003), American football player