Head coach, Alan Solomons said: "We have agreed, on mutual grounds, to accept the loan of Ross Rennie and Stuart McInally to Bristol Rugby.
"It has been a challenging couple of years for Ross, who recently returned from long-term knee and shoulder injuries. A fresh start will re-energise him."
Rennie said: "Edinburgh is my home town and I love the club. It's been my life for the last 10 years but I think the time is right to have a new challenge."
"I know the direction Bristol want to go and the plans that Andy (Robinson) has, so it's an exciting time to join the club. There's an important few months coming up and I hope that I can contribute to the cause."
McInally had made fifty-eight appearances for Edinburgh Rugby before making a positional switch to hooker last summer.
The former Scotland age-grade captain has adapted well to his new position and is looking forward to the next step in his positional development.
He said: "I've got a strong ambition to play professional rugby for Edinburgh and international rugby for Scotland, so the opportunity to get regular game time at Bristol was something I jumped at."
"I'm looking forward to getting started and helping the club achieve a top four finish in the Championship."
Solomons added: "Stuart's (McInally) loan spell will allow him to continue his development in a new position in a fiercely competitive, and often forward dominated league."
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