| Jónas Guðni Sævarsson | |
| Birth Date: | 28 November 1983 |
| Birth Place: | Iceland |
| Height: | 1.70 m |
| Position: | Midfielder |
| Currentclub: | Keflavík |
| Clubnumber: | 5 |
| Youthclubs1: | Keflavík |
| Years1: | 2002–2007 |
| Clubs1: | Keflavík |
| Caps1: | 97 |
| Goals1: | 2 |
| Years2: | 2008–2009 |
| Clubs2: | KR Reykjavík |
| Caps2: | 35 |
| Goals2: | 3 |
| Years3: | 2009–2012 |
| Clubs3: | Halmstads BK |
| Caps3: | 54 |
| Goals3: | 5 |
| Years4: | 2012–2015 |
| Clubs4: | KR Reykjavík |
| Caps4: | 14 |
| Goals4: | 1 |
| Years5: | 2015– |
| Clubs5: | Keflavík |
| Caps5: | 13 |
| Goals5: | 3 |
| Nationalyears1: | 1999 |
| Nationalyears2: | 2001 |
| Nationalyears3: | 2004–2005 |
| Nationalyears4: | 2008– |
| Nationalteam1: | Iceland U17 |
| Nationalteam2: | Iceland U19 |
| Nationalteam3: | Iceland U21 |
| Nationalteam4: | Iceland |
| Nationalcaps1: | 9 |
| Nationalcaps2: | 4 |
| Nationalcaps3: | 7 |
| Nationalcaps4: | 7 |
| Nationalgoals1: | 0 |
| Nationalgoals2: | 0 |
| Nationalgoals3: | 0 |
| Nationalgoals4: | 2 |
| Club-Update: | 18:45, 27 July 2016 (UTC) |
| Nationalteam-Update: | 19 January 2010 |
Jónas Guðni Sævarsson (born 28 November 1983) is an Icelandic footballer who currently plays for Keflavík as a midfielder.
He started his career in Keflavík. In 2007, he left that club for Úrvalsdeild rivals KR Reykjavík; he stayed with them until summer 2009, when he signed for Swedish club Halmstads BK. He made his debut for them on 27 July 2009 when he came on as a substitute against Malmö FF, a 0–3 defeat. Sævarsson returned to KR in 2012. He remained at the club for three seasons, before re-signing for his first club Keflavík in November 2015.[1]
Shortly after his move to KR Reykjavíkur he also made his debut for the Icelandic national team. He scored his two goals for the national team against Portugal and England.