thumb|right|300px|[[Hvalfjörður Tunnel is long, and reaches a depth of below sea level.]]
There are 14 open road tunnels in Iceland in the Icelandic road system. Additionally, there is one road tunnel only for use by a silicon plant in Húsavík. Tunnels in Iceland are mostly built under mountains to prevent winter isolation of remote communities which would otherwise have to depend on high roads that are often closed due to snow, to shorten distance between communities, and to increase road safety by bypassing dangerous stretches of road. A tunnel under a fjord, the Hvalfjörður Tunnel, is among the longest underwater road tunnels in the world, and goes as deep as below sea level.
|Replaced Oddskarðsgöng
| Eastern Region (Eskifjörður - Norðfjörður)
|align="center" | 92
|-
| align="left" | Fáskrúðsfjarðargöng
|
| 2
| 2005, 9 September
|
| Eastern Region (Fáskrúðsfjörður - Reyðarfjörður)
| align="center" | 1
|-
| align="left" | Hvalfjörður Tunnel
|
| 2<sup>b</sup>
| 1998, 1 July
|
| Capital Region — Western Region
| align="center" | 1
|-
| align="left" | Dýrafjarðargöng
|
| 2
| 2020, 25 October
|
| Westfjords (Arnarfjörður - Dýrafjörður)
| align="center" | 60
|-
| align="left" | Bolungarvíkurgöng
|
| 2
| 2010, 25 September
|
| Westfjords (Bolungarvík - Hnífsdal)
| align ="center" | 61
|-
| align="left" | Héðinsfjarðargöng II
|
| 2
| 2010, 2 October
|
| Northeastern Region (Héðinsfjörður - Siglufjörður)
| align="center" | 76
|-
| align="left" | Múlagöng (Ólafsfjardarmúli)
|
| 1<sup>a</sup>
| 1991, 1 March
|
| Northeastern Region (Dalvík - Ólafsfjörð)
| align="center" | 82
|-
| align="left" | Almannaskarðsgöng
|
| 2
| 2005, 24 June
|
| Eastern Region (Route 1, east of Höfn)
| align="center" | 1
|-
| align="left" | Húsavíkurhöfði Tunnel
|
| 2
| 2017, 4 November
|Not open to the public
| Northeastern Region (Húsavík)
| align="center" | —
|-
| align="left" | Strákagöng
|
| 1<sup>a</sup>
| 1967
|
| Northwestern Region (west of Siglufjörður)
| align="center" | 76
|-style="background-color: #fdbb84"
| align="left" | Oddskarðsgöng
|
| 1<sup>a</sup>
| 1977
| Closed 11 November 2017
| Eastern Region (west of Neskaupstaður)
| align="center" | 92
|-
| align="left" | Arnardalshamar Tunnel
|
| 2
| 1948
|
| Westfjords
| align="center" | 61
|-style="background-color: #99FFFF"
| align="left" | Fjarðarheiðargöng
|
| 2
| >2040
| Planned
| Eastern Region (Egilsstaðir - Seyðisfjörður)
| align="center" | 93
|-style="background-color: #99FFFF"
| align="left" |Fljótagöng
|5,200 m
|2
|2030
|}
<sup>a</sup> Single lane with passing places<br>
<sup>b</sup> There is a third lane for passing on the uphill side at the north end of the tunnel.
See also
- List of tunnels by location
- Transport in Iceland
- Vegagerðin