| Fullname: | Knattspyrnufélag Fjarðabyggðar |
| Founded: | 2001 |
| Dissolved: | 2022 |
| Position: | 2. deild karla, 11th of 12th (relegated) |
| Leftarm1: | dd0000 |
| Body1: | dd0000 |
| Rightarm1: | dd0000 |
| Shorts1: | 000033 |
| Socks1: | dd0000 |
| Leftarm2: | fff202 |
| Body2: | fff202 |
| Rightarm2: | fff202 |
| Shorts2: | 000033 |
| Socks2: | fff202 |
Knattspyrnufélag Fjarðabyggðar (KFF) was an Icelandic football club from the town of Fjarðabyggð located on the east coast of Iceland.
The club was founded in 2001 with a merger of three local clubs, Íþróttafélagið Þróttur Neskaupstað, Ungmennafélagið Austri Eskifirði and Ungmennafélagið Valur Reyðarfirði. The next year, for the first time, Fjarðabyggð sent a women's team to play at league level. In 2010 Ungmennafélagið Súlan Stöðvarfirði came into the merger.
In 2022, the club merged with Leiknir Fáskrúðsfjörður to establish the new Knattspyrnufélag Austfjarða.[1]
Magni Fannberg Magnússon (2007–2008)