|Full name||Patrick Martin Mulligan|
|Date of birth||17 March 1945|
|Place of birth||Beaumont, Dublin, Ireland|
|1967||→ Boston Rovers (guest)||6||(1)|
|1968||→ Boston Beacons (guest)||21||(4)|
|1969–1979||Republic of Ireland||50||(1)|
|1966||Republic of Ireland U23||1||(0)|
|1965–1979||League of Ireland XI||6||(0)|
|* Senior club appearances and goals counted for the domestic league only.
Mulligan started his senior career playing for Bohemians in 1963. However after only two games he signed for Shamrock Rovers in December 1963. He made his competitive debut in a 7–1 win over Bohemians on 26 January 1964 and scored his first goal for the Hoops on 23 August 1964 in a 4–0 League of Ireland Shield win over his old club.
He won the FAI Cup in 1965, 1966, 1967 and 1969. During the 1963–64 season he was part of the side which won seven trophies. He represented Rovers in European competition 10 times. In the summer of 1967 he was part of the Rovers team that represented Boston in the United Soccer Association league. In 1968, they sent him on loan to the Boston Beacons of the North American Soccer League.
On 22 October 1969, Mulligan signed for English club Chelsea for £17,500. He featured in Chelsea's UEFA Cup Winners' Cup success in 1971, making a late substitute appearance in the first final against Real Madrid in Athens. He also played in Chelsea's League Cup final against Stoke City a year later, though they lost 2–1 at Wembley.
Mulligan left Chelsea in 1972 for Crystal Palace. He stayed with the South London club for three years (his personal highlight was scoring two goals in the famous 5-0 victory over Manchester United in 1972). He signed for West Brom after his spell at CPFC. Mulligan re-joined Shamrock Rovers in 1979, making his final appearance on 24 February 1980. He had his testimonial in August 1980. He then joined Panathinaikos as assistant manager before retiring from the game in 1982.
Mulligan managed League of Ireland sides Galway United (during the 1983–84 season) and Shelbourne during the first half of the 1985–86 season. He also applied to manage the Irish national team, but lost out to Eoin Hand by a single vote. One FAI committee member later said he had voted against Mulligan because he thought Mulligan had thrown a bun at him on a past away trip.
- FAI Cup: 4
- Shamrock Rovers 1965, 1966, 1967, 1969
- Top Four Cup
- Shamrock Rovers 1966
- Dublin City Cup
- Shamrock Rovers 1966/67
- Leinster Senior Cup
- Shamrock Rovers – 1968/69
- UEFA Cup Winners' Cup: 1
- Chelsea – 1970–71
- The Irish Times http://www.irishtimes.com/newspaper/archive/1963/1212/Pg003.html#Ar00301:3C23803E73CD3E538046D3CD4534074A341E4524254A443F4A14C84D24DB45163748164A3ED89A41E8AF3D340744241E. Missing or empty
- The Irish Times http://www.irishtimes.com/newspaper/archive/1964/0824/Pg004.html#Ar00404:0D51D71251F10733910AB3AB0475AF0825C905588D0648A006588D0918A0. Missing or empty
- USA and NASL stats
- The Irish Times http://www.irishtimes.com/newspaper/archive/1980/0806/Pg003.html#Ar00301:40936643137C2532CD31731743D36647A37B3043CC3233E13253CC33B3E145346647347947446548947A49449C4BB4AA. Missing or empty
- "Gluttony – part four". The Guardian. London. 20 May 2009. Retrieved 17 June 2012.