Leckie with Adelaide United in 2010
|Full name||Mathew Allan Leckie|
|Date of birth||4 February 1991|
|Place of birth||Melbourne, Victoria, Australia|
|Height||1.81 m (5 ft 11 1⁄2 in)|
|2011–2012||Borussia Mönchengladbach II||10||(3)|
|2012–2013||→ FSV Frankfurt (loan)||28||(4)|
|2012–2013||→ FSV Frankfurt II (loan)||5||(5)|
|2014–2017||FC Ingolstadt 04||94||(10)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 22 May 2017.
‡ National team caps and goals correct as of 25 June 2017
As a child growing up in Melbourne's Western suburbs, Leckie actually aspired to play Australian rules football, his family supporting Essendon, however at 11 years old a change to a school in Sunshine with a more multicultural student body inspired him to take up football and he "never looked back".
Leckie was a member of Victorian State League Division 1 outfit, Bulleen Lions until 2 September 2009, where Leckie was signed to Adelaide United for a two-year professional contract. He made his A-League debut on 18 September for Adelaide United coming on as a substitute in the 75th minute against Melbourne Victory.
Leckie scored the winning goal in his first AFC Champions League match on 24 February 2010, against the reigning champions Pohang Steelers at Hindmarsh Stadium. He followed this up by scoring his second goal in as many games against Shandong Luneng in Adelaide's 2–0 win on Match Day 2 of the Champions League. Leckie is considered to be one of Australia's best young players.
Leckie started the 2010–11 season with a bang, scoring twice in Adelaide's first five games, earning wide praise for his entertaining and robust style of play and winning the favour of the Australian U19 side for their competing in the 2010 AFC Under-19 championships. At the end of the A-League season he signed for German side Borussia Mönchengladbach. He scored his first goals for his new club with a double in a 5–2 friendly win against Aberdeen FC On 9 July 2011. In early 2013, he was loaned out to Frankfurt and has since scored 3 goals in only 2 appearances for the reserve team.
On the 3 June 2013, Mathew made his loan move to FSV Frankfurt permanent, signing a three-year contract that runs till 2016. Mathew stated the move was made to maximise his personal development and to build on the successes of his first season spent at FSV on loan where he made 28 appearances and scored 4 goals.
In August 2009, Leckie was selected to represent Australia in the AFF U19 Youth Championship 2009, where he opened up the score-sheet in the 4–1 win over hosts, Vietnam, in the semi-finals. Mathew was called up to the Australian Under-19s for the 2010 AFC U-19 Championship.
Ex-Australian National Coach, Pim Verbeek, named Leckie in the 25 man Socceroos squad for the AFC Asian Cup 2011 Qualifier against Indonesia. Leckie didn't make an appearance in the game which Australia won 1–0 to book their place in the Asian Cup.
Ex-Australian national coach Holger Osieck included Leckie in the squad for the international friendly against the Republic of Korea on 14 November 2012. Leckie came on as a late substitution with only limited time on the ball.
Australian National Coach, Ange Postecoglou, included Leckie in the squad for the international friendly against Costa Rica on 19 November 2013.
Leckie had an outstanding World Cup campaign resulting in pundits estimating his worth at $10 million. He was quoted saying he does not regret his decision to sign for German second division club FC Ingolstadt, recognising that he may have had offers from larger clubs following his World Cup performances. "So whether I could have maybe had other offers now after this World Cup if I hadn't signed, I never would have known." 
Leckie was named as part of Australia's 2015 AFC Asian Cup squad. He started Australia's first game of the tournament against Kuwait, hitting the crossbar in the second half, and then providing the assist for James Troisi to score Australia's fourth goal of the match and helping Australia to a 4–1 win.
- As of match played 4 June 2016. Australia score listed first, score column indicates score after each Leckie goal. 
|1||15 October 2013||Craven Cottage, London, England||4||Canada||3–0||3–0||Friendly|
|2||3 September 2015||Perth Oval, Perth, Australia||26||Bangladesh||1–0||5–0||2018 FIFA World Cup qualification|
|3||4 June 2016||Stadium Australia, Sydney, Australia||31||Greece||1–0||1–0||Friendly|
|4||23 March 2017||PAS Stadium, Teheran, Iran||38||Iraq||1–0||1–1||2018 FIFA World Cup qualification|
|5||28 March 2017||Sydney Football Stadium, Sydney, Australia||39||United Arab Emirates||2–0||2–0||2018 FIFA World Cup qualification|
- As of 04 February 2017
|FSV Frankfurt||2012–13||2. Bundesliga||28||4||2||1||0||0||30||5|
|FC Ingolstadt||2014–15||2. Bundesliga||32||7||0||0||0||0||32||7|
- "FIFA Confederations Cup Russia 2017: List of players: Australia" (PDF). FIFA. 2 July 2017. p. 1. Retrieved 21 July 2017.
- "Mathew Leckie". socceroos.com.au. Football Federation Australia. Retrieved 4 September 2015.
- Leckie proves AFL's loss is the Socceroos' gain Goal.com
- "Reds make final signing". Adelaide United FC. A-League. 2 September 2009. Archived from the original on 4 March 2011. Retrieved 2 September 2009.
- "Reds' horror run against Victory continues". Adelaide United FC. A-League. 18 September 2009. Archived from the original on 12 April 2011. Retrieved 18 September 2009.
- "Reds upset Asian champions in ACL". Adelaide United FC. A-League. 24 February 2010. Retrieved 24 February 2010.[permanent dead link]
- "Adelaide United dismantle Shandong in China". Adelaide United FC. A-League. 10 March 2010. Retrieved 11 March 2010.
- "Bright Future For Adelaide United Starlet Matthew Leckie – Aurelio Vidmar". goal.com. 30 September 2009. Retrieved 8 October 2011.
- "Leckie makes permanent FSV Frankfurt move". Bundesliga.com. 3 June 2013. Retrieved 13 July 2013.
- "Leckie wechselt zum FCI – Trio verlängert" (in German). kicker.de. Retrieved 9 May 2014.
- "Hertha BSC verpflichtet Mathew Leckie" [Hetha BSC signs Mathew Leckie]. Hertha BSC. 22 May 2017. Retrieved 22 May 2017.
- "Thailand-Australia Final in U19 Meet". ASEAN Football Federation. 10 August 2009. Retrieved 18 September 2009.[permanent dead link]
- "Reds score four in Qantas Socceroos squad". Adelaide United FC. A-League. 17 February 2010. Retrieved 17 February 2010.
- "Australia qualifies". Football Federation Australia. Football Federation Australia. 8 March 2010. Retrieved 8 March 2010.
- Mathew Leckie at Soccerway