The first junior football match in East Yorkshire with smoke free sidelines takes place on Sunday.
It's hoped the ban will promote healthy lifestyles and reduce chances for children to see adults smoking.
Smoking rates in Hull have fallen steadily, but remain above the national average, with 27% of adults in Hull and 11% in the East Riding smoking.
Keith Pinder is from the Hull and District Youth Football League.
He says: "As part of creating a safe environment for children and young adults to play football this is very much a positive step forward and one which is being embraced by our clubs. Parents, family and coaches are real role models for our players and it is important we give them the right message."