The Jukebox group and the 'Heart Skips a Beat' solo singer, both originally X Factor acts, have headlined 29 major venues each this year.
JLS said in a statement: "This is a great achievement and really goes to show how hard we have been working this year."
Murs commented: "It's a real honour. The last two years have been incredible for me - I've achieved so much and it's great to be recognised for all the work I've put in. Thanks to everyone who's come to see me play live - there's lots more to come."
Barney Hooper from PRS for Music, the organisation which conducted the survey, said: "Performing live and going on tour are fundamental to any artist and is a great way for them to engage with their fans.
"Congratulations to both JLS and Olly Murs and all the songwriters who they have worked with to create the music that so many people are enjoying."
Watch the video for JLS's 'Do You Feel What I Feel?' below: