Jon Fratelli (born John Lawler on 4 March, 1979) is the vocalist and lead guitarist in Scottish band The Fratellis. He currently resides in the town of Cumbernauld north-east of Glasgow where he went to school at St. Maurices High School.

When Jon was 13 years old he asked his parents for a guitar which they refused to buy him, so he bought it himself. Jon sold the content of his bedroom raising over £300 pounds which he used to buy a '60s reissue Fender Telecaster as seen pictured right.

Jon Lawler is presumed to be married to a burlesque dancer called Heather, whose stage name, Chelsea Dagger, he borrowed to write the song named after her.