The independent financial advisors have been supporting the Warriors for six years and the new deal means their logo will remain on the sleeve of both the playing and replica shirts next season.
Glasgow Warriors managing director, Nathan Bombrys said: “McCrea’s are great supporters of the club and it’s fantastic news that they’ve extended their deal with us for another season.
They’ve been a sponsor of the club for a long time and we’ve worked closely with them to help them achieve their own business targets.
“Their long-term support has helped us grow the club and we look forward to their continued support both on and off the pitch.”
Managing director of McCrea Financial Services, Douglas McCrea, said: “Glasgow Warriors is an excellent vehicle for us to raise awareness of our company and engage with their supporters.
“Last season was fantastic and the way the team performed shows the excellent progress the club has made over the last few years.
“We’re delighted to continue our support of the Warriors for another season and we’re all looking forward to the start of the new season.”