| Ágúst Gylfason | |
| Fullname: | Ágúst Þór Gylfason |
| Birth Date: | 1971 8, df=yes |
| Birth Place: | Iceland |
| Height: | 1.80 m |
| Position: | Midfielder |
| Currentclub: | Grótta (manager) |
| Years1: | 1990–1994 |
| Clubs1: | Valur |
| Caps1: | 71 |
| Goals1: | 7 |
| Years2: | 1995–1998 |
| Clubs2: | SK Brann |
| Caps2: | 77 |
| Goals2: | 4 |
| Years3: | 1999–2003 |
| Clubs3: | Fram Reykjavik |
| Caps3: | 63 |
| Goals3: | 21 |
| Years4: | 2004–2007 |
| Clubs4: | KR Reykjavik |
| Caps4: | 41 |
| Goals4: | 4 |
| Years5: | 2008–2009 |
| Clubs5: | Fjölnir |
| Caps5: | 20 |
| Goals5: | 1 |
| Nationalyears1: | 1991–1993 |
| Nationalteam1: | Iceland U21 |
| Nationalcaps1: | 13 |
| Nationalgoals1: | 0 |
| Nationalyears2: | 1993–1996 |
| Nationalteam2: | Iceland |
| Nationalcaps2: | 6 |
| Nationalgoals2: | 0 |
| Manageryears1: | 2010–2011 |
| Managerclubs1: | Björninn |
| Manageryears2: | 2012–2017 |
| Managerclubs2: | Fjölnir |
| Manageryears3: | 2018–2019 |
| Managerclubs3: | Breiðablik |
| Manageryears4: | 2020–2021 |
| Managerclubs4: | Grótta |
| Manageryears5: | 2021– |
| Managerclubs5: | Stjarnan |
Ágúst Gylfason (born 1 August 1971) is an Icelandic football manager and a former player. He was manager of Breiðablik until 2019, when he became manager of Grótta's men's football team.[1]
Ágúst started his career at Valur before moving to SK Brann in Norway. He returned to Iceland after three years to play for Fram.
While playing for Valur, he worked as a carpenter and studied business administration. He was also married and had a son in early 1994.[2] Ágúst came on trial in November 1994 together with Geoff Aunger.[3] Brann's Anders Giske travelled to Iceland to negotiate a transfer with Valur. The deal included stipulation of a free transfer to an Icelandic club if Ágúst could not adapt to Norway.[4] The personal contract was ready and signed on 4 January 1995.[5]
After Ágúst's time in Brann had run its course, he had a trial with Tranmere Rovers in 1998.[6] Reportedly, he also visited Brentford, where owner Ron Noades came to personally pick him up at the airport.[7]
Ágúst made his debut for Iceland in an April 1993 friendly match against the USA, coming on as a late substitute for Arnar Grétarsson. He earned his 6th and last cap in a November 1996 World Cup qualifier against Ireland.