|Full name||John Landa Matkin|
|Date of birth||20 April 1986|
|Place of birth||San Diego, California, United States|
|Height||1.80 m (5 ft 11 in)|
|2007–2009||San Diego Toreros|
* Senior club appearances and goals counted for the domestic league only|
‡ National team caps and goals correct as of 14 August 2014
John Landa Matkin (born 20 April 1986 in San Diego, California) is an American-born Guamanian footballer who plays as a midfielder who played for UiTM F.C. and currently for Guam national football team.
On 8 January 2013 it was officially announced that Landa had signed with United Sikkim F.C. in the I-League until the end of the 2012-13 I-League. Landa then made his debut for the club in the I-League the next day on 9 January 2013 against Mumbai F.C. at home at the Paljor Stadium in which he came on as a 73rd-minute substitute for Nadong Bhutia as United Sikkim drew the match 2–2.
Due to his heritage Matkin was able to represent the United States, Mexico, and Guam. After seeing that his chances of playing for the United States and Mexico fell short he decided to accept Guam's offer to be called up to represent them during the 2014 AFC Challenge Cup qualifiers to be held on 2 March 2013. Matkin then made his debut for Guam on 2 March 2013 against Myanmar in the first match of the qualifiers in which he started and played the full 90 minutes as Guam lost the match 5–0.
- Scores and results list Guams's goal tally first.
|1.||25 July 2014||GFA National Training Center, Dededo, Guam||Northern Mariana Islands||1–0||5–0||2015 EAFF East Asian Cup qualification|
|2.||14 November 2019||National Football Stadium, Malé, Maldives||Maldives||2–0||3–1||2022 FIFA World Cup qualification|
- "John Landa". Yahoo. Retrieved 9 January 2013.
- "An AIFF preview of United Sikkim-Mumbai FC match". Facebook (United Sikkim Football Club). Retrieved 9 January 2013.
- "United Sikkim Football Club vs Mumbai FC LIVE Commentary". Goal.com. Retrieved 9 January 2013.[dead link]
- Chaudhuri, Arunava. "Guam Squad for 2014 AFC Challenge Cup qualifiers". Arunfoot. Archived from the original on 2 July 2013. Retrieved 2 March 2013.
- "Schedule". The Asian Football Confederation. Archived from the original on 3 March 2013. Retrieved 2 March 2013.
- "John Matkin". National Football Teams. Benjamin Strack-Zimmerman. Retrieved 23 November 2019.