Harlequins director of rugby Conor O'Shea, whose side sit at the helm of the tight Pool 1 in this year's Amlin Challenge Cup has nothing but praise for Skinner.
"Will is an outstanding person and player, as well as a natural born leader, and we are delighted that he has committed himself to the club in this manner," he said.
"His battle with Luke Wallace for the 7 position over the coming years will be an exciting one to watch for all our supporters.
"We have always said we aim to watch this group of players grow and develop together and Will is integral to that aim in pushing the standards, both on and off the pitch"
Skinner has made 24 appearances in Europe rugby and has expressed his delight o be part of a side with big ambitions.
"The next few years are going to be an exciting era for the club and I very much want to be a part of it", said Skinner.
"Quins is a fantastic club and we are as a team, strong and committed to building great things for the club in the future."