The Official Online RBS 6 Nations Store is open. The store has everything you need to get behind your team during the RBS 6 Nations, plus the store is now fully stocked with a much wider range of rugby merchandise.
Kellock, who captained Scotland in the 2011 RBS 6 Nations and in the World Cup that autumn, featured in all three of Scotland’s autumn internationals this year.
And the second row admits that his ambition of winning trophies with Gregor Townsend’s side burns as bright as ever.
"Over the next three or four years I have one goal and that's to help this club win silverware," said Kellock.
"It's a privilege to play for Glasgow Warriors and I'm honoured to be captain of this club.
"I'm still keen to develop as a player and learn from the coaches at Glasgow. I'm still working hard at my game, still trying to improve and I have more to give to the Warriors."
Warriors head coach Gregor Townsend also paid tribute to his captain.
"Al is an outstanding leader and ambassador for the club," he said. “But it's his on-field performances that have earned him the reward of this contract extension.
"Alastair embodies what the Warriors are all about and he will be one of the key drivers of our success in the years to come."