Walker was a fixture on British television coverage of F1, and therefore heard in other territories such as Australia, for over three decades.
Hamilton was among them, taking to Instagram shortly after that news to share his memories of hearing Walker as a child.
“So sad to hear of Murray's passing,” wrote the seven-time world champion.
“I remember growing up hearing your voice over the races. You made the sport so much more exciting and captivating.
“The iconic voice of our sport and a great man, thank you for all you did, you will never be forgotten. Rest in peace.”
“I just remember hearing this iconic voice, growing up watching all the grands prix,” said the Mercedes driver.
“He really made the sport exciting. There's been no one like him that I've seen on TV, that even without watching the TV, if you're out in the room and you hear him you're excited, it makes you want to run back in and see what's happening.
“He is very much loved around the world, I think, and particularly in the UK. I think his contribution to the sport was huge.
“Obviously me growing up watching him through that early phase of my life, and hearing him, no one can come close.
“So it's naturally sad to hear his passing, but I think he's had a long, great life. I hope and pray that I have the opportunity to live a long life like he has.”
The 2021 F1 season opens with the Bahrain Grand Prix on March 26-28.