Counties 4 Yorkshire
Counties 4 Yorkshire is an English rugby union league at the tenth tier of the domestic competition for teams from Yorkshire. Club rugby in Yorkshire operates without promotion play-offs meaning that the top two teams are automatically promoted to Yorkshire 3 and the bottom two teams were relegated to Yorkshire 5 until the RFU made changes to the Yorkshire league structure. Each season a team from Counties 3 Yorkshire or Yorkshire 4 may be picked to take part in the RFU Junior Vase - a national competition for clubs at levels 9-12.
For the 2017-18 season, Yorkshire 4 was broken up into two regional leagues - Yorkshire 4 and Yorkshire 4 - while Yorkshire 5 ceased to exist. Teams from both Yorkshire 4 and 5 were transferred into the regional divisions depending on location. After the teams have played each other home and away, in February the clubs are reallocated into a Premier league and a Shield league for one further round of fixtures. The top four teams from each league play in the Premier and the other teams play in the Shield. The top two teams in the Premier league are promoted to Counties 3 Yorkshire.
Participating clubs 2025-26
North division
Departing were Hornsea, promoted to Counties 3 Yorkshire as champions.| Team | Ground | Capacity | City/Area | Previous season |
| Aireborough | Nunroyd Park | Yeadon, West Yorkshire | 8th | |
| Knaresborough | Hay-A-Park Lane | Knaresborough, North Yorkshire | 4th | |
| Leeds Medics & Dentists | Weetwood Playing Fields | Weetwood, Leeds, West Yorkshire | 5th | |
| Leeds Modernians | Cookridge Lane | Cookridge, Leeds, West Yorkshire | 6th | |
| Nestle Rowntree | Mille Crux | York, North Yorkshire | 2nd | |
| Richmondshire | Theakston Lane | Richmond, North Yorkshire | 7th | |
| Thirsk | Newsham Road | Thirsk, North Yorkshire | Relegated from Counties 3 Yorkshire | |
| York Railway Institute | New Lane | York, North Yorkshire | 3rd |
South division
Departing were Dearne Valley promoted to Counties 3 Yorkshire.| Team | Ground | Capacity | City/Area | Previous season |
| Hallamshire | Northfield Road | Sheffield, South Yorkshire | New entry | |
| Hessle | Livingstone Road | Hessle, East Riding of Yorkshire | 5th | |
| Knottingley | Howard's Field | Knottingley, West Yorkshire | 7th | |
| Maltby | Muglet Lane | Maltby, South Yorkshire | 3rd | |
| Sheffield Medicals | Norton Playing Fields | Norton, Sheffield, South Yorkshire | 2nd | |
| Stocksbridge | Coal Pit Lane | Stocksbridge, South Yorkshire | 4th | |
| Withernsea | Hollym | Withernsea, East Riding of Yorkshire | New entry | |
| Wortley | Finkle Street Lane | Wortley, South Yorkshire | 6th |
Participating clubs 2024-25
For the new season the league was once more split into North / South division as it had been most recently in season 2021-22. Three new teams, all from South Yorkshire, were added to the South league to make a total of seven, with eight competing in the North division.Departing were Old Otliensians and Thornensians, promoted to Counties 3 Yorkshire as champions and runners-up respectively
Hornsea won the league on the final day of the season and doing so got promoted to Counties 3 Yorkshire for the 25/26 season.
North division
| Team | Ground | Capacity | City/Area | Previous season |
| Aireborough | Nunroyd Park | Yeadon, West Yorkshire | 5th | |
| Hornsea | Hollis Recreation Ground | Hornsea, East Riding of Yorkshire | 3rd | |
| Knaresborough | Hay-A-Park Lane | Knaresborough, North Yorkshire | 13th | |
| Leeds Medics & Dentists | Weetwood Playing Fields | Weetwood, Leeds, West Yorkshire | 7th | |
| Leeds Modernians | Cookridge Lane | Cookridge, Leeds, West Yorkshire | 9th | |
| Nestle Rowntree | Mille Crux | York, North Yorkshire | 4th | |
| Richmondshire | Theakston Lane | Richmond, North Yorkshire | 11th | |
| York Railway Institute | New Lane | York, North Yorkshire | 10th |
South division
Dearne Valley won the south division and join the Northern division winners Hornsea in Counties 3 Yorkshire for the 25/26 season| Team | Ground | Capacity | City/Area | Previous season |
| Dearne Valley | Vancouver Drive | Bolton upon Dearne, South Yorkshire | New entry | |
| Hessle | Livingstone Road | Hessle, East Riding of Yorkshire | 6th | |
| Knottingley | Howard's Field | Knottingley, West Yorkshire | 8th | |
| Maltby | Muglet Lane | Maltby, South Yorkshire | New entry | |
| Sheffield Medicals | Norton Playing Fields | Norton, Sheffield, South Yorkshire | Relegated from Counties 3 Yorkshire | |
| Stocksbridge | Coal Pit Lane | Stocksbridge, South Yorkshire | 12th | |
| Wortley | Finkle Street Lane | Wortley, South Yorkshire | New entry |
Participating clubs 2023-24
Departing were Mosborough who moved on a level transfer to Counties 3 Midlands East. Joining were three sides relegated from Counties 3 Yorkshire together with Richmondshire who re-entered the Yorkshire Rugby leagues having most recently competed in Durham/Northumberland 3 for season 2021-22 during which they withdrew in January 2022.| Team | Ground | Capacity | City/Area | Previous season |
| Aireborough | Nunroyd Park | Yeadon, West Yorkshire | 6th | |
| Hessle | Livingstone Road | Hessle, East Riding of Yorkshire | 10th | |
| Hornsea | Hollis Recreation Ground | Hornsea, East Riding of Yorkshire | 5th | |
| Knaresborough | Hay-A-Park Lane | Knaresborough, North Yorkshire | 12th | |
| Knottingley | Howard's Field | Knottingley, West Yorkshire | Relegated from Counties 3 Yorkshire | |
| Leeds Medics & Dentists | Weetwood Playing Fields | Weetwood, Leeds, West Yorkshire | Relegated from Counties 3 Yorkshire | |
| Leeds Modernians | Cookridge Lane | Cookridge, Leeds, West Yorkshire | 11th | |
| Nestle Rowntree | Mille Crux | York, North Yorkshire | 8th | |
| Old Otliensians | Chaffers Field | Otley, West Yorkshire | 3rd | |
| Richmondshire | Theakston Lane | Richmond, North Yorkshire | Re-entry | |
| Stocksbridge | Coal Pit Lane | Stocksbridge, South Yorkshire | 7th | |
| Thornensians | Coulman Road | Thorne, South Yorkshire | Relegated from Counties 3 Yorkshire | |
| York Railway Institute | New Lane | York, North Yorkshire | 9th |
Participating clubs 2022-23
This was the first season following the RFU Adult Competition Review. The league was substantially similar to Yorkshire 4 albeit consolidated back into one having previously been split NW and SE. Eleven of the teams from season 2021-22 returned with two promoted to Counties 3 Yorkshire and two withdrawing from the leagues. So with four departing but only one arriving the league was reduced from 15 teams to 12.| Team | Ground | Capacity | City/Area | Previous season |
| Aireborough | Nunroyd Park | Yeadon, West Yorkshire | 7th | |
| Hessle | Livingstone Road | Hessle, East Riding of Yorkshire | 5th | |
| Hornsea | Hollis Recreation Ground | Hornsea, East Riding of Yorkshire | 2nd / 7th | |
| Halifax | Ovenden Park | Halifax, West Yorkshire | 6th | |
| Knaresborough | Hay-A-Park Lane | Knaresborough, North Yorkshire | 8th | |
| Leeds Modernians | Cookridge Lane | Cookridge, Leeds, West Yorkshire | 5th | |
| Mosborough | Mosborough Miners Welfare Club | Mosborough, Sheffield, South Yorkshire | 3rd / 6th | |
| Nestle Rowntree | Mille Crux | York, North Yorkshire | 3rd Yorks 4 NW / 3rd | |
| Old Otliensians | Chaffers Field | Otley, West Yorkshire | 14th Yorkshire 3 | |
| Rotherham Phoenix | Herringthorpe Playing Fields | Clifton, Rotherham, South Yorkshire | 1st | |
| Stocksbridge | Coal Pit Lane | Stocksbridge, South Yorkshire | 4th / 8th | |
| York Railway Institute | New Lane | York, North Yorkshire | 4th / 5th |