|Date of birth||September 5, 1985|
|Place of birth||Carlsbad, California, United States|
|Height||5 ft 7 in (1.70 m)|
|2003–2006||San Diego Toreros|
|2005||Boulder Rapids Reserve||14||(2)|
|2006||Southern California Fusion|
|2007–2010||St Patrick's Athletic||114||(24)|
|2011–2013||New England Revolution||45||(4)|
|2014–||San Diego Flash|
|2010||League of Ireland XI||1||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of November 22, 2013.
† Appearances (Goals).
College and amateur
After attending La Costa Canyon High School, Guy enrolled at the University of San Diego, after being recruited by a number of other schools. In his sophomore season Guy earned First Team All–West Coast Conference and 2nd Team–NSCAA All-West Region honors.
Guy was drafted in the 2nd round (22nd overall pick) of the 2007 MLS SuperDraft by FC Dallas. Despite being offered a developmental contract by Dallas, Guy sought a professional contract in Europe. He attended trials at a number of clubs, including Crystal Palace FC of England and Hannover 96 of Germany but in February 2007, joined St Patrick's Athletic of Ireland. He made his League of Ireland debut for the Irish club on April 6, 2007, coming on as a substitute in the 83rd minute of a 1–0 win over Galway United. He scored his first goal for the Saints on the 15th of July.
On July 17, 2008, Guy was written into the St Pat's history books as he scored the only goal in a UEFA Cup First Qualifying Round match against JFK Olimps Riga of Latvia, keying the club's first-ever away European win. On October 18, Guy scored a hat trick in a 3–1 win over Shamrock Rovers in the South-Dublin derby.
In 2009, Guy helped guide St. Pat's past Valletta F.C. & Krylia Sovetov Samara in the 2009-10 UEFA Europa League 2nd & 3rd qualifying rounds, however Guy's St. Pat's side lost to FC Steaua Bucureşti in the play-off round 5–1 on aggregate. Ryan Guy was voted the St Patrick’s Athletic Supporters Club Player of the Year for 2009. He made 44 appearances across all competitions and scored 6 goals. He scored the opening goal of the 2010 League of Ireland season, which was also the first ever goal in the Airtricity League.
His performance over 2009 and 2010 earned him a spot on the OT XI compiled by SoccerOverThere.com, ranking his performance relative to his league as one of the best 11 by an American in Europe. During the 2010 season, Guy was chosen for the League of Ireland XI who played Manchester United in the inaugural match in Aviva Stadium in Dublin.
Guy currently holds the Pats record for most European appearances with 14.
In January 2011, he left St. Pats for "personal reasons" to return to his homeland. Upon his return to the US, Guy had a short stint with the San Diego Flash of the National Premier Soccer League, and trialled with the Portland Timbers and FC Dallas, before signing with New England Revolution on June 9, 2011 after a trial and recommendation from San Diego Flash head coach Warren Barton.
In August 2012, Guy confirmed he would be representing Guam at International level. Guy made his International debut for Guam in the Philippine Peace Cup, and featured in all 3 group games. In January 2013, Ryan was called the star player of the Guam national team by the team's coach Gary White in an article for BBC sport.
- Score and Result lists Guam's goals first
|1||19 November 2013||Olympic Stadium, Phnom Penh, Cambodia||Cambodia||1–0||2–0||Friendly|||
|2||23 July 2014 (16')||GFA_National_Training_Center, Harmon, Guam||Mongolia||1–0||2–0||Preliminary round 1 EAFF East Asian cup|||
|3||23 July 2014 (75')||GFA_National_Training_Center, Harmon, Guam||Mongolia||2–0||2-0||Preliminary round 1 EAFF East Asian cup|
|4||25 July 2014||GFA_National_Training_Center, Harmon, Guam||Northern Mariana Islands||3–0||5–0||Preliminary round 1 EAFF East Asian cup|||
- "Guy will join Matao after MLS season ends". Retrieved 2012-08-01.
- "FC Dallas makes six selections in the 2007 MLS SuperDraft". MLS website. Retrieved 2007-02-09.
- "Howie’s 2009–10 All-Over There team SoccerOverThere.com accessdate=2010-05-03".
- "Professional Footballer Ryan Guy Joins Guam's "Matao" Pacific News Center". Retrieved 2012-08-01.
- "Guy returns after "Special Experience" with Guam". Retrieved 2012-10-04.
- "MLS Int'l Roundup: Tim Cahill nets record-tying goal for Australia in friendly win over Costa Rica". Major League Soccer. Retrieved 19 November 2013.