Taugevatn (also called Tågavatni) is a lake on the south side of the Bergen Line in Ulvik municipality in Vestland county, Norway. It sits at 1,296 metres (4,252 ft) above sea level. The railway had its summit here, at 1,301.7 metres (4,271 ft) above sea level, until the Finse Tunnel was built which led to the closure of the route past the lake on 16 May 1993. After the tunnel opened, the highest point on the line became 1,237 metres (4,058 ft) above sea level, at kilometre 306.90 inside the tunnel.

Taugevatn drains via Fagervatnet lake (at the same elevation) to the Ustekveikja river, which feeds Ustevatn lake in Hol Municipality in Buskerud.

• List of lakes in Norway