Bærum Tunnel

Infobox tunnel
name = Bærum Tunnel


caption =
line = Askerbanen
location = Bærum, Norway
coordinates =
system = Norwegian railways
status = Under construction
start = Marstranderveien
end = Engervannet
stations =
open = "2011"
close =
owner = Jernbaneverket
operator =
character = Express trains
linelength = convert|5500|m|ft|abbr=on
tracklength = convert|11000|m|ft|abbr=on
notrack = Double
gauge = RailGauge|sg
el = 15 kV AC
speed = convert|160|km/h|mph|abbr=on
hielevation =
lowelevation=
height =
grade =|

Bærum Tunnel ( _no. Bærumstunnelen) is 5,500 meter long railway tunnel under construction that will make up most of the 6.7 km second stretch of Askerbanen, from Sandvika Station to Lysaker Station. The tunnel starts at Marstranderveien and terminates at Engervannet east of Sandvika. The tunnel is planned to be opened in 2011.

Neighbors have complained about damages caused by the construction.