| Guðjón Pétur Lýðsson | |
| Fullname: | Guðjón Pétur Lýðsson |
| Birth Date: | 28 December 1987 |
| Birth Place: | Reykjavík, Iceland |
| Height: | 1.80 m |
| Position: | Midfielder |
| Currentclub: | Haukar |
| Years1: | 2006 |
| Clubs1: | Haukar |
| Caps1: | 13 |
| Goals1: | 1 |
| Years2: | 2007 |
| Clubs2: | Breiðablik |
| Caps2: | 1 |
| Goals2: | 0 |
| Years3: | 2007–2008 |
| Clubs3: | Stjarnan |
| Caps3: | 13 |
| Goals3: | 0 |
| Years4: | 2008 |
| Clubs4: | UMF Álftanes |
| Caps4: | 7 |
| Goals4: | 4 |
| Years5: | 2009–2010 |
| Clubs5: | Haukar |
| Caps5: | 42 |
| Goals5: | 7 |
| Years6: | 2011–2012 |
| Clubs6: | Valur |
| Caps6: | 37 |
| Goals6: | 9 |
| Years7: | 2011 |
| Clubs7: | → Helsingborg (loan) |
| Caps7: | 3 |
| Goals7: | 0 |
| Years8: | 2013–2015 |
| Clubs8: | Breiðablik |
| Caps8: | 59 |
| Goals8: | 17 |
| Years9: | 2016–2018 |
| Clubs9: | Valur |
| Caps9: | 53 |
| Goals9: | 13 |
| Years10: | 2018 |
| Clubs10: | KA |
| Caps10: | 0 |
| Goals10: | 0 |
| Years11: | 2019-2020 |
| Clubs11: | Breiðablik |
| Caps11: | 25 |
| Goals11: | 2 |
| Years12: | 2020 |
| Clubs12: | Stjarnan |
| Caps12: | 13 |
| Goals12: | 2 |
| Years13: | 2021-2022 |
| Clubs13: | ÍBV |
| Caps13: | 30 |
| Goals13: | 6 |
| Years14: | 2022-2023 |
| Clubs14: | Grindavík |
| Caps14: | 27 |
| Goals14: | 4 |
| Years15: | 2024- |
| Clubs15: | Haukar |
| Caps15: | 10 |
| Goals15: | 2 |
| Club-Update: | 15 July 2024 |
Guðjón Pétur Lýðsson (born 28 December 1987) is an Icelandic footballer who plays for Haukar as a midfielder.
Guðjón Pétur Lýðsson was an important factor in the team of Haukar that promoted to Úrvalsdeild. After the club was relegated, he was sold to Valur and in the end of the season he went on loan to Helsingborg, where he played couple of matches and won the Swedish league Allsvenskan. After his time at Helsingborg, he went back to play for Valur. In 2013, he was sold to Breiðablik, where he was a key player in the squad. After the 2015 season he rejoined Valur. In 2017 they won the Icelandic League.
On 12 November 2018, Guðjón Pétur signed a 3-year contract with Knattspyrnufélag Akureyrar.[1]