|Full name||William Reuben Tremelling|
|Date of birth||9 May 1905|
|Place of birth||Newhall, England|
|Date of death||
1961 (aged 55–56)
|Playing position||Centre forward/Centre half|
|1930-1937||Preston North End||209||(11)|
|* Senior club appearances and goals counted for the domestic league only.|
William Reuben "Billy" Tremelling (9 May 1905 — 1961) was an English professional footballer. He played as a forward at the beginning of his career, but was later played as a defender. He was the younger brother of fellow footballer Dan Tremelling, a goalkeeper who played for England.
After starting out with Shirebrook, Kirby Colliery, Welbeck Colliery, Mansfield Town, Retford Town and Worksop Town, in 1925 he joined Blackpool, then in the Second Division, with whom he spent five years.
Tremelling made his debut for Blackpool on 28 March 1925, in a goalless draw at Manchester United in front of a crowd of 30,000. He made one more league appearance in the 1924–25 season, in the very next game (a home victory over Southampton), but missed the final eight games of the season.
He made a major impact in 1926–27, with 30 goals in 26 league games. He scored his first goal for Blackpool on 13 November 1926, in a 3–0 victory over Bradford City at Bloomfield Road. He went on to score in the next five games, including a hat-trick in a 6–0 home victory over Clapton Orient on 11 December. He scored another treble in a 4–2 victory at Port Vale on 16 April 1927, the second of Blackpool's two games in as many days. Tremelling also scored Blackpool's sole goal in the FA Cup that season, in a 3–1 third-round loss at home to Bolton Wanderers on 8 January 1927.
In 1927–28, Tremelling, under new Blackpool boss Sydney Beaumont, was switched to a defensive position. As such, his goal hauls dried up: he made 22 appearances and scored just four goals that season.
Back in a defensive role for the 1929–30 campaign, Tremelling helped Blackpool to the Division Two championship. He made 38 league appearances and scored three goals in the club's successful season.
Tremelling's final game for Blackpool was on 6 December 1930, in a 3–1 home defeat by West Ham.
After retirement, Tremelling returned to Blackpool as a coach.
- "William Tremelling : Preston North End : Biography". Spartacus.schoolnet.co.uk. Archived from the original on 30 September 2007.
- Calley, Roy (1992). Blackpool: A Complete Record 1887-1992. Breedon Books Sport. ISBN 1-873626-07-X.
- Joyce, Michael (2004). Football League Players' Records 1888-1939. ISBN 1-899468-67-6.