|Full name||David Hay|
|Date of birth||29 January 1948|
|Place of birth||Paisley, Scotland, UK|
|1970–1973||Scottish League XI||4||(0)|
|2009||Livingston (Interim manager)|
|* Senior club appearances and goals counted for the domestic league only.
† Appearances (Goals).
After completing his secondary education at St Mirin's Academy in Paisley, Hay signed for Celtic in 1966. He became one of the "Quality Street Kids" reserve team which eventually took the places of the ageing Lisbon Lions. He made his league debut on 6 March 1968 against Aberdeen going on to make 230 appearances for Celtic scoring 12 goals, winning 5 League Championships, 3 Scottish Cups and 1 League Cup. After playing for Scotland in the 1974 World Cup in West Germany, he was transferred to Chelsea following a dispute with Celtic. In 1979 a serious knee injury forced him to retire from the game as a player. He had also suffered problems with a detached retina and eventually lost full vision in his right eye. He won a total 27 caps for Scotland.
His first venture into football management was when he took over the reins at Motherwell in 1981 following Ally MacLeod. He succeeded Billy McNeill as Celtic manager in 1983 winning the Scottish Cup in 1985 and the Scottish Premier League in dramatic fashion in 1986. Celtic won their final game 5–0 against St Mirren at Love Street but needed Hearts, who were league leaders and favourites to lift the trophy, to lose to Dundee at Dens Park. Albert Kidd secured the victory for Dundee with two goals and Celtic were crowned surprise champions. Hay made way for Billy McNeill to return to the Celtic managership in 1987.
Hay was manager at Livingston in season 2003–04, having previously been co-manager with Jim Leishman and general manager, taking over from Marcio Maximo Barcellos after just 9 games of the season, he then went on to win the Scottish League Cup while the club was in administration. He was released at the end of the season to be replaced by Allan Preston, one of his first team coaches, by new chairman, Pearse Flynn of the Lionheart Consortium. He was later appointed manager of Dunfermline Athletic, joining Jim Leishman, another former Livingston manager. Hay proved one of the least popular managers in the club's history, and was sacked near the end of the season with the club looking certain to be relegated from the Scottish Premier League – although in the event his former manager, Leishman managed to prevent relegation in the few remaining games.
- Scottish League Champions (5): 1970, 1971, 1972, 1973, 1974
- Scottish Cup (2): 1971, 1974
- Scottish League Cup (1): 1970
- Scottish First Division (1): 1982
- Norwegian League Champions (1): 1989
|Motherwell||August 1981||May 1982||—|
|Celtic||August 1983||May 1987||56||29||14||13||51.79|
|Livingston||March 2000||July 2003||147||67||32||48||45.58|
|Livingston||October 2003||July 2004||39||15||11||13||38.46|
|Dunfermline Athletic||June 2004||May 2005||42||8||12||22||19.05|
- First spell at Livingston was a co-manager role with Jim Leishman.
- No statistics available for Motherwell and St. Mirren.