|Full name||Kenneth John Philip Petit DeMange|
|Date of birth||3 September 1964|
|Place of birth||Dublin, Republic of Ireland|
|19xx–19xx||St Kevins CBS|
|1986||→ Scunthorpe United (loan)||3||(2)|
|1990–1991||→ Cardiff City (loan)||15||(0)|
|1984–1987||Republic of Ireland U21||5||(1)|
|1989||Republic of Ireland U23||1||(0)|
|1987–1988||Republic of Ireland||2||(0)|
|1990||Republic of Ireland B||1||(0)|
|* Senior club appearances and goals counted for the domestic league only.
Ken DeMange (born 3 September 1964 in Dublin, Republic of Ireland) is a former Irish footballer who played for, among others, Liverpool, Leeds United, Hull City and Dundalk. As an international he also played for the Republic of Ireland.
DeMange was raised in the Ballygall area of Northside Dublin. He first showed his potential as a schoolboy footballer, playing for St Kevins CBS, Stella Maris and Tolka Rovers before moving on to Home Farm where his teammates included Brian Mooney. Made his League of Ireland debut for Farm at Athlone Town on 8 November 1981. While playing for Home Farm, he was awarded the Young Player of the Year title for the 1982–83 season by the Professional Footballers Association of Ireland He also finished as the teams top goalscorer with seven goals.
In August 1983 DeMange, along with Brian Mooney, signed for Liverpool but in four seasons with the club, he never made a competitive first team appearance. He did however help Liverpool Reserves, win two consecutive Central League titles in 1984 and 1985. During the 1984–85 season he was top scorer for the Reserves scoring 12 goals in 32 league appearances. In December 1986 he also had a successful loan spell with Scunthorpe United, scoring 2 goals in 3 leagues appearances. He also played for Scunthorpe in 1 FA Cup game and scored 1 further goal. In May 1987, while still playing for Liverpool Reserves, he made his international debut for the Republic of Ireland.
In September 1987 DeMange was sold to Leeds United for a fee of £75,000. He subsequently scored on his debut for United, with a diving header, in a 2–0 win against Manchester City at Elland Road on 26 September 1987. However this was also the only goal he scored for the club.  In his brief spell with United, DeMange went onto make 20 first team appearances, 15 of them in the league.
In March 1988 DeMange was sold to Hull City for a fee of £65,000. He subsequently made 68 league appearances and scored 1 league goal for City. He also made a further 4 appearances for City in the FA Cup and 1 in the League Cup. In October 1988 he also won his second senior international cap while at City. In November 1990 and in March 1991 during loan spells with Cardiff City, he also made a further 15 league appearances.
Return to Ireland
After leaving Hull City in June 1992, DeMange returned to Ireland where he played for several clubs in both the League of Ireland and the Irish League. During the 1994–95 season he played for a Dundalk team managed by Dermot Keely and he helped the club win the League of Ireland title. During the campaign he scored 3 league goals, 2 against Monaghan United on 11 November 1994 in a 4–0 away win and 1 against Cobh Ramblers on 12 December 1994 in a 2–2 away draw.
DeMange played for the Republic of Ireland national under-19 football team that qualified for the 1982 UEFA European Under-18 Football Championship. In the finals he scored against Austria. He also played for the under-21, under-23, B and senior teams. While with Liverpool Reserves, he won 5 under-21 caps and while with Hull City he won an under-23 cap. In 1987 and 1988, under Jack Charlton, DeMange also made 2 substitute appearances for the senior Republic of Ireland team. On 23 May 1987 he made his senior debut when he came on for Mick McCarthy during a 1–0 win against Brazil at Lansdowne Road. He won his second cap on 19 October 1988 in another home game against Tunisia. DeMange came on for Tony Cascarino and helped the Republic win 4–0. He won his only B cap on 27 March 1990 in a 4–1 win against England B at Turner's Cross, coming on as a very late substitute for Alan McLoughlin.
- Central League
- Winners 1983–84, 1984–85: 2
- League of Ireland Cup
- Winners 1992–93: 1
- League of Ireland
- Winners 1994–95: 1
- League of Ireland Cup
- Runners Up 1994–95: 1
- Leinster Senior Cup
- Winners 1994–95: 1
- PFAI Young Player of the Year
- The Complete Who's Who of Irish International Football, 1945–96 (1996):Stephen McGarrigle 
- Home Farm to Liverpool
- Central League 1983–84
- Central League 1984–85
- Liverpool Irish Dream Team
- Liverpool fansite
- Liverpool to Leeds United
- Scored on Leeds Utd debut
- Leeds United One Goal Wonders
- Leeds United fansite
- Hull City fansite
- Dundalk F.C. 1994–95[dead link]
- DeMange playing with Dundalk[dead link]
- Republic of Ireland international
- England B at Rsssf Archived 4 March 2016 at the Wayback Machine.