"I have always been incredibly proud to coach Scotland and I'm delighted and grateful to be able to extend my involvement with the national team," Townsend told Scottish Rugby's website http://scottishrugby.org/news/18/07/31/scotland-coaching-team-contracts-extended.
Townsend's staff including assistant coaches Matt Taylor and Mike Blair were also handed extensions.
"We're entering a crucial and exciting time for this group, as we continue to seek improvements across the board and target a strong autumn test series and Six Nations, before our build up to the Rugby World Cup begins in earnest," Townsend added.
Scotland play 13 tests up until next year's World Cup in Japan, including three autumn fixtures and the 2019 Six Nations, before four European summer tests against France and Georgia.
(Reporting by Shrivathsa Sridhar in Bengaluru; Editing by Christian Radnedge)
