Wilford F. (Min) Leibrook (January 18, 1903 - June 8, 1943) was an American jazz tubist and bassist.
Born in Hamilton, Ohio, Leibrook began as a cornetist before switching to tuba and bass. In the 1920s he played in the Ten Foot Band in Chicago. He played in The Wolverines in 1924 alongside Bix Beiderbecke, where he made his first recordings, and later joined the band of Arnold Johnson.
In 1927 he moved to New York City, where he played in the Paul Whiteman Orchestra until 1931. During this time he began recording on bass saxophone, mostly with small jazz groups from the Whiteman band under Beiderbecke and Frankie Trumbauer.
He worked later in the 1930s with Lennie Hayton and Eddie Duchin, mostly on string bass. He returned to bass sax in 1936 to play in the group The Three T's, with Trumbauer, Jack Teagarden, and Charlie Teagarden.
By the late 1930s, Leibrook moved to Los Angeles and worked as a bassist in radio and theaters. He never recorded as a leader.