|Full name||Sam Justin Gallagher|
|Date of birth||5 May 1991|
|Place of birth||Sydney, Australia|
|Height||1.83 m (6 ft 0 in)|
|Playing position||Centre Back / Left Back|
|2010–2012||Central Coast Mariners||1||(0)|
|2014||Hà Nội T&T F.C.||11||(2)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 19 January 2014.
† Appearances (Goals).
Gallagher was born in Sydney, New South Wales. A product of Epping Boys High School, Gallagher spent his junior career at Gladesville Spirit, the NSW Institute of Sport and Manly United FC before being signed for the Sydney FC National Youth League team.
On 19 March 2010, it was announced that Gallagher had signed a senior contract with the Central Coast Mariners starting from the 2010-11 season. He eventually left the club in 2012, having made just 1 out of a possible 61 appearances for the club.
Gallagher will start the 2012-13 season at the Melbourne Victory, having signed a pre-contract with the A-League club in March. His debut with the Victory ended almost as soon as it began; in just the 16th minute of the Victory's Round 8 clash with the Western Sydney Wanderers at Parramatta Stadium, Gallagher was controversially sent off for bringing down Wanderers striker Dino Kresinger just outside the penalty area, denying the Croatian what was deemed an obvious goalscoring opportunity. This came despite the fact that Kresinger had clearly fouled Gallagher prior to Gallagher bringing him down. As a result of that red card, Gallagher was handed a one match ban, ruling him out of the Victory's clash with Perth Glory.
Gallagher made his second and final appearance with the Victory in their Round 10 clash with Adelaide United. Gallagher was handed a yellow card in the 79th minute of the match, a match which the Victory eventually lost 4-2.
Gallagher, along with teammates Diogo Ferreira, Spase Dilevski and Tando Velaphi were released by Melbourne Victory in April 2013, shortly after the end of the 2012-13 A-League season. He left the club, having played just 2 games out of a possible 29 in his lone season with the club.
On 7 January 2014, after a successful trial period, Sam Gallagher signed with V-League Champions Hanoi T&T on a 1 year contract. He will play for Hanoi T&T in the 2014 V League and AFC Cup. The deal makes Sam the first Australian to play in both the Australian A-League and the Vietnamese V-League. He is hoped to be the replacement for Cristiano Roland, T&T's former captain and defender who retired after 2013 season. Gallagher said he knew about the pressure and hoped to do well replacing Cristiano.
Gallagher made his debut in 11 January when he came from the bench in the match against Becamex Binh Duong, which T&T won 4-2. He played about 60 minutes and did well enough to earn the belief from club manager Phan Thanh Hùng. He got chosen to the starting XI for the first time a week later in V-League second round against Hoang Anh Gia Lai F.C. and continued to do well. He got his second full-start against Vissai Ninh Binh F.C. in 22 January and scored an own-goal as T&T lost 1-3 in Hang Day.
Gallagher has represented Australia at the Under 19 and Under 20 levels, playing in the 2010 AFC U-19 Championship qualification and 2009 FIFA U-20 World Cup. He made his Under 23 debut for the Olyroos against Singapore, coming on as a substitute in a 6-0 friendly win.
With Sydney FC:
With Central Coast Mariners:
With Hanoi T&T F.C.:
- Sydney Morning Herald - Young Socceroo Sam has world at his feet
- Manly Daily - Young Sam signs up with Sydney FC
- Young Gallagher Signs On At Sydney FC
- CCMariners.com.au - Mariners make double swoop
- "New face for Victory". Melbourne: The Age. 16 March 2012. Retrieved 20 May 2012.
- "Ten-man Victory beat Wanderers 2-0". The Australian. 24 November 2012.
- Sam Gallagher – FIFA competition record