William Lucas Lush (November 10, 1873 – August 28, 1951) was an American baseball player and college athletics coach and administrator.

At the time of the 1880 United States census, Lush, at age 7, was living in Bridgeport with his parents, Charles and Annie, and two younger brothers, Walter and George.

[1] Lush played seven seasons of Major League Baseball with the Washington Senators (1895–1897), Boston Beaneaters (1901–1902), Detroit Tigers (1903), and Cleveland Naps (1904).

In 1902, Lush had 24 assists as the Beaneaters' center fielder, and a range factor of 2.37 (0.44 points higher than the league average).

[7] After separating from Yale, Lush coached the basketball team at the United States Naval Academy in the 1908–09 season.

His contract stipulated, however, that he was allowed to coach that New York University basketball team in the winter of 1915–16.

[16] As permitted by his Fordham contract, Lush began coaching the NYU basketball team in November 1915.

[17] In July 1916, Lush purchased a fifty percent interest in the baseball club at Bridgeport, Connecticut.

[18] In November 1916, he was hired by the Naval Athletic Association to coach the baseball and basketball teams at the U.S.

[19][20] Lush's 1918–19 basketball team finished the season with a 16–0 record[21] and was retroactively named the 1918–19 national champion by the Premo-Porretta Power Poll.

[23][24] After leaving the Naval Academy, Lush coached the baseball and basketball teams at St. John's College in Maryland.

[27] At the time of the 1910 United States census, Lush was living in New Haven and employed as a baseball coach.

[29] At the time of the 1920 United States census, Lush listed his residence as New Haven and his occupation as the "physical director" for the Naval Academy.

His household at that time consisted of his wife, Mary, and four children, Elizabeth, William, Frances and Edward.