The 81-year-old co-founded the iconic band, whose hits include Goodbye Stranger, Breakfast in America and The Logical Song.
The band, which shot to fame in the 1970s and 80s, achieved two diamond certified albums and saw sales exceed 60 million.
Davies was born in Swindon in 1944. His mother ran a hair salon in the town, while his father was a merchant navy man who died in 1973.
His fellow band members have described his childhood as being defined by a love of music.
The singer, who attended Sanford Street School in Swindon, grew up listening to Gene Krupa’s Drummin’ Man, which sparked a lifelong passion for jazz, blues and rock’n’roll.
On Monday, Rick Davies’ band members shared the sad news of his passing.
Here’s what you had to say about him.
Steve Hobbs said: “I was in Rick’s Swindon band for a short while when I started playing the sax.
“This was before he hit the big time.
“We used to practice over his Mum’s hairdresser shop near the Town Hall. His band was known as Rick’s Blues.”
Barbara Cady replied: “I was one of three teenybop fans that used to come to watch you all rehearse.
“Absolutely great band, I’ve never forgotten you all, you were real gentlemen and great musicians.”
Anne Ford replied: “His first ever band was Vince and the Vigilantes.
“I worked for Mrs Davies and went with them on their gigs, I was seeing someone in the band at the time.”
Sharon Dumelow said: “My dad went to school with him and Justin Hayward.”
John Compson said: “One of Swindon’s finest. A great musician and member of a top band.”
Lark Keef said: “He was born at 43 Eastcott Hill and lived there as a boy.”
Pete Loder said: “RIP Rick, thank you for the music!”
Simon Ellis-Underwood said: “Didn’t realise he was from Swindon! R.I.P. !”
Stever Francis said: “Great band. Sadly missed.”
Dave Low said: “They were just brilliant! Rest in peace, good feller.”
Martin Hutchinson said: “What talent what a band, RIP Rick.”
Colin Bird said: “Another Swindon-born musician has passed away.”
Dave James said: “Met him a couple of times when I drove his mum to his UK concerts, big mate of Terry Court and Ken White, brilliant musician and never forgot his roots.”
Robert Ballard said: “Iconic band, brilliant albums. There is a picture of Rick reading the Adver on the rear of Breakfast in America.”
Tim Bohane replied: “Remember that well, all had the daily paper from where they were born.”
Shaun Morris said: “Rick Davies was a Swindon born artist that went on to very great things.
“Just like Gilbert O’Sullivan & the members of XTC.
“The unassuming & wonderful artist Ken White is also another that should be recognised as such – He worked for Richard Branson for many years.
“There was also the actress Diana Dors – Originating from Swindon.
“I believe Justin Hayward of the Moody Blues was another Swindon born star.
“Quite amazing.”
Lisa Marcelle said: “Dreamer by Supertramp came up on my memories today from three years ago RIP Rick.”
Christine Abbott said: “Loved their music.”
Robert Dunn said: “RIP Rick, thanks for the memories.”
Paul Laird said: “RIP ‘Crime of the Century’ was the soundtrack to all of my O’Level and A’Level exam revision sessions.”
Mena Viana said: “Iconic band, brilliant albums.”