Buckland largely uses the Telecaster Thinline 72' as his primary electric guitar, as seen mainly in the albums Viva La Vida or Death and All His Friends, X&Y, and Mylo Xyloto. Buckland uses the Fender Stratocaster for his secondary guitar, but he has made clear that the Telecaster series is his favorite. Buckland's guitar style is mainly based on U2's The Edge's guitar sound, which consists mainly of ringing, conservative notation, various amps and distorters, and musical rawness. Buckland's guitar-playing style has inspired many other bands to adopt a similar technique, such as The Fray's Joe King, The Killers, and Pat Monahan from Train on some songs. The Edge himself stated in an interview at Glastonbury: "[Jonny Buckland] is an inspiration to guitar players everywhere, and I am proud to know that I was one of his main influences. (laughs) It makes me feel like a real rock star."
Chris Martin often refers to him as "Jonny Boy" during live concerts, particularly if Buckland is about to do a solo or a long riff. Martin has said, "There would be no Coldplay music without Jonny Buckland." The affection between Martin and Buckland is often evident during live concerts and interviews. Buckland is the godfather to Martin's daughter, Apple. He is a fan of Tottenham Hotspur F.C.
Buckland was a vegetarian for some time, but eventually gave up after spending some time in Japan and, after not being able to communicate that he didn't eat meat, was served beef and found that he really liked it.
Buckland's brother Tim and his band The Domino State supported Coldplay at the O2 in December 2008.
Buckland had a daughter, Violet, in 2007, and a son named Jonah in 2011 with Chloe Evans who he eventually married in 2009.