The Bulldogs have been in partnership with Mission Foods since January 2009 and will now be linked to the company until at least 2014 with an additional two-year option available.
The extension makes the relationship between the two parties the longest major partnership in the club's history.
Bulldogs president David Smorgon said he was delighted with the renewal that further strengthens the already solid partnership.
"Three years ago, Mission Foods was just launching into the Australian market. We believe our partnership has created great brand value for Mission and look forward to continuing our prosperous relationship with them over the next three years," he said.
"Mission Foods has recognised the changing face of the Western Bulldogs brand and its growth over the past three years, with both brands building a platform for sustained success while pledging a strong commitment to the community."
Smorgon also said the partnership placed the club in an "enviable position to underpin the financial viability of the club", which is a key driver in the Dogs' five-year vision.
More to follow.
