|Full name||Ian David Jeffs|
|Date of birth||12 October 1982|
|Place of birth||Chester, England|
|Height||1.75 m (5 ft 9 in)|
|2002–2003||→ Kidsgrove Athletic (loan)||?||(?)|
|2003||→ ÍBV (loan)||16||(3)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 20:52, 1 June 2014 (UTC).
Jeffs began his career with Crewe Alexandra but made only one senior appearance for the club before being released in 2004. He was loaned to Kidsgrove Athletic for a short spell during the 2002–03 season. Jeffs has spent the majority of his career playing in Iceland, where he has represented ÍBV, Fylkir and Valur. Between 2006 and 2007 he played for Swedish side Örebro, where he was part of the side that won promotion to the Allsvenskan, the top division of Swedish football.
Born in Chester, Jeffs came through the youth ranks at Crewe Alexandra and was awarded his first professional contract in February 2001 along with eleven other academy graduates, including Dean Ashton, David Vaughan and Michael Higdon. His first involvement in senior football came during a loan spell at non-league side Kidsgrove Athletic in the 2002–03 season. On 16 May 2003, it was announced that he and team-mate Tom Betts were to join newly promoted Icelandic Úrvalsdeild outfit ÍBV on loan for the duration of the 2003 campaign. Jeffs made his debut for the club two days later in a 2–3 home defeat to KA. In his third appearance for ÍBV, he scored the only goal in a 1–0 home win over Fylkir as the team recorded their first victory of the season. He was almost ever-present in the ÍBV starting line-up during the first two months of the season, appearing in 11 out of 12 league and cup matches; an injury sustained in the 0–2 defeat to Þróttur kept him out of the 4–5 penalty shootout loss to Grindavík in the fourth round of the Icelandic Cup. Jeffs went on to play all but two of ÍBV's league matches in the 2003 season, scoring three goals in the process.
Jeffs and Betts returned to Crewe at the end of their loan period and were given international clearance to play for the Railwaymen following the re-opening of the transfer window on 1 January 2004. Jeffs went on to make his debut for the club two days later, coming on as a second-half substitute for Ben Rix as Crewe were beaten 0–1 at home by Telford United in the third round of the FA Cup. He was never selected to play for the club again and was released at the end of the 2003–04 campaign, having already agreed to return to ÍBV on a permanent basis for the 2004 season.
- As of 31 May 2014.
|Club||Season||League||National Cup||League Cup||Europe[a]||Total|
|Crewe Alexandra||2003–04||First Division||0||0||1||0||0||0||0||0||1||0|
|ÍBV||2007||1. deild karla||11||9||0||0||0||0||0||0||11||9|
- Appearances and goals in UEFA Cup/UEFA Europa League
- "Payback time". Crewe Chronicle. 7 January 2004. Retrieved 1 June 2014.
- "Porter offered Kidsgrove job". Non League Daily. 31 December 2002. Retrieved 1 June 2014.
- "Alex duo dash to Iceland". Sky Sports. Retrieved 31 May 2014.
- Elvar Geir Magnússon (16 May 2003). "Tom Betts og Ian Jeffs komnir með leikheimild" [Tom Betts and Ian Jeffs arrive with permission to play] (in Icelandic). fótbolti.net. Retrieved 31 May 2014.
- "Ian David Jeffs – Leikjaferill". KSÍ (ksi.is). Retrieved 31 May 2014.
- Hafliði Breiðfjörð (29 May 2003). "Sanngjarn sigur ÍBV á Fylki þegar ÍBV fékk sín fyrstu stig í sumar" [Deserved win for ÍBV against Fylkir as ÍBV get their first points of the summer] (in Icelandic). fótbolti.net. Retrieved 31 May 2014.
- Magnús Már Einarsson (29 June 2003). "Ian Jeffs frá í þrjár vikur" [Ian Jeffs out for three weeks] (in Icelandic). fótbolti.net. Retrieved 31 May 2014.
- "ÍBV 0–0 Grindavík (4–5)". KSÍ (ksi.is). Retrieved 31 May 2014.
- "Ian David Jeffs – Meistaraflokkur". KSÍ (ksi.is). Retrieved 1 June 2014.
- "Crewe duo cleared to play". Sky Sports. Retrieved 1 June 2014.
- "Crewe 0–1 Telford". BBC Sport. 3 January 2004. Retrieved 1 June 2014.
- Ian Jeffs at Soccerbase. Retrieved 31 May 2014.
- Elvar Geir Magnússon (19 March 2004). "Ian Jeffs aftur með ÍBV í sumar" [Ian Jeffs back with ÍBV this summer] (in Icelandic). fótbolti.net. Retrieved 1 June 2014.
- "Ian Jeffs". svenskfotboll.se. Retrieved 31 May 2014.