Mary Lou or Marylou may refer to:
People Mary Lou (name), including list of persons with this given name Mary Lou (actress), American actress Mary Lou Kolbenschlag (born 1992)
Films Mary Lou (1928 film), a German silent film Mary Lou (1948 film), an American film Mary Lou, the working title for the 2018 film Avengers: Infinity War Mary Lou 2, the working title for the 2019 film Avengers: Endgame
Music Marylou (album), an album by Swiss singer Anna Rossinelli "Mary Lou", a 1955 song by Young Jessie "Mary Lou", a song by Bruce Springsteen on his 1998 album Tracks
See also "Good Bye Mary Lou" a song from the album We Are Him by Angels of Light "Hello Mary Lou", a song by Gene Pitney Mary Louise (name), also Mary Louisa Marie-Lou, a given name