Counties 3 Kent
Counties 3 Kent is an English level 9 Rugby Union League and is made up of teams predominantly from south-east London and Kent. The teams play home and away matches from September through to April. The league champions move up to Counties 2 Kent. Relegated teams drop down to Counties 4 Kent. Following the RFU's Adult Competition Review, from season 2022-23 it adopted its current name Counties 3 Kent.
Each year some of the clubs in this division also take part in the RFU Junior Vase - a level 9-12 national competition.
Teams for 2025–26
Departing were Tonbridge Juddians II and Beckenham II, both promoted to Counties 2 Kent.Old Dunstonians withdrew before the season started.
| Team | Ground | Capacity | City/Area | Previous season |
| Brockleians | Civil Service Sports Ground | Eltham, London | 4th | |
| Canterbury III | Marine Travel Ground | 1,500 | Canterbury, Kent | Promoted from Counties 4 Kent |
| Dartford Valley | Leigh Academy | Dartford, Kent | Relegated from Counties 2 Kent | |
| Gravesend II | Rectory Field | Gravesend, Kent | 11th | |
| Hastings & Bexhill | William Parker Lower School | Hastings, East Sussex | 3rd | |
| New Ash Green | New Ash Green Sports Pavilion | New Ash Green, Kent | 10th | |
| Old Gravesendians | Fleetway Sports Ground | Gravesend, Kent | 8th | |
| Old Williamsonians | Sir Joseph Williamson's Mathematical School | Rochester, Kent | Promoted from Counties 4 Kent | |
| Sittingbourne | Gore Court Cricket Club | Sittingbourne, Kent | 5th | |
| Tunbridge Wells II | St Marks Recreation Ground | 3,000 | Royal Tunbridge Wells, Kent | 6th |
| Whitstable | Reeves Way | Chestfield, Kent | 7th |
Teams for 2024–25
Departing were Old Elthamians and Old Alleynians II, both promoted to Counties 2 Kent. Faversham were relegated to Counties 4 Kent.Joining were Old Dunstonians relegated from Counties 2 Kent together with Beckenham II, Brockleians and Old Gravesendians, all promoted from Counties 4 Kent
| Team | Ground | Capacity | City/Area | Previous season |
| Beckenham II | Balmoral Avenue | Beckenham, London | Promoted from Counties 4 Kent | |
| Brockleians | Civil Service Sports Ground | Eltham, London | Promoted from Counties 4 Kent | |
| Gravesend II | Rectory Field | Gravesend, Kent | 8th | |
| Hastings & Bexhill | William Parker Lower School | Hastings, East Sussex | 7th | |
| New Ash Green | New Ash Green Sports Pavilion | New Ash Green, Kent | 9th | |
| Old Dunstonians | St. Dunstan's Lane | Beckenham, London | Relegated from Counties 2 Kent | |
| Old Gravesendians | Fleetway Sports Ground | Gravesend, Kent | Promoted from Counties 4 Kent | |
| Sittingbourne | Gore Court Cricket Club | Sittingbourne, Kent | 4th | |
| Tonbridge Juddians II | The Slade | 1,500 | Tonbridge, Kent | 3rd |
| Tunbridge Wells II | St Marks Recreation Ground | 3,000 | Royal Tunbridge Wells, Kent | 5th |
| Whitstable | Reeves Way | Chestfield, Kent | 6th |
Teams for 2023–24
Departing were Dartford Valley and Medway II, both promoted to Counties 2 Kent. King's College Hospital and Footscray were relegated to Counties 4 Kent.Joining were Hastings & Bexhill relegated from Counties 2 Kent together with Sittingbourne promoted from Counties 4 Kent and Tonbridge Juddians III who upon joining this league were rebranded as Tonbridge Juddians II.
| Team | Ground | Capacity | City/Area | Previous season |
| Faversham | Recreation Ground | Faversham, Kent | 5th | |
| Gravesend II | Rectory Field | Gravesend, Kent | 8th | |
| Hastings & Bexhill | William Parker Lower School | Hastings, East Sussex | Relegated from Counties 2 Kent | |
| New Ash Green | New Ash Green Sports Pavilion | New Ash Green, Kent | 7th | |
| Old Alleynians II | The Common | Dulwich, London | 4th | |
| Old Elthamians | Hospital Ground | Chislehurst, London | 3rd | |
| Sittingbourne | Gore Court Cricket Club | Sittingbourne, Kent | Promoted from Counties 4 Kent | |
| Tonbridge Juddians II | The Slade | 1,500 | Tonbridge, Kent | Promoted from Counties 4 Kent |
| Tunbridge Wells II | St Marks Recreation Ground | 3,000 | Royal Tunbridge Wells, Kent | New entry |
| Whitstable | Reeves Way | Chestfield, Kent | 6th |
Teams for 2022–23
This was the first season following the RFU Adult Competition Review with the league adopting its new name of Counties 3 Kent.Returning were 4 of the 9 teams who competed in the previous season's league.
Departing were Hastings & Bexhill and Park House, both promoted to Counties 2 Kent. Old Williamsonians, Cliffe Crusaders, Brockleians dropped to Counties 4 Kent.
Joining were Dartford Valley and Whitstable, promoted from Kent 2. New to the league were Gravesend II, Old Elthamians, Old Alleynians II and Medway II.
| Team | Ground | Capacity | City/Area | Previous season |
| Dartford Valley | Leigh Academy | Dartford, Kent | Promoted from Kent 2 | |
| Faversham | Recreation Ground | Faversham, Kent | 5th | |
| Footscray | Footscray Playing Fields | New Eltham, London | 8th | |
| Gravesend II | Rectory Field | Gravesend, Kent | New entry | |
| King's College Hospital | Dulwich Sports Ground | Dulwich, London | 6th | |
| Medway II | Priestfields | Rochester, Kent | New entry | |
| New Ash Green | New Ash Green Sports Pavilion | New Ash Green, Kent | 4th | |
| Old Alleynians II | The Common | Dulwich, London | New entry | |
| Old Elthamians | Hospital Ground | Chislehurst, London | New entry | |
| Whitstable | Reeves Way | Chestfield, Kent | Promoted from Kent 2 |
Participating clubs 2021–22
The teams competing in 2021-22 achieved their places in the league based on performances in 2019–20, the 'previous season' column in the table below refers to that season not 2020–21.Despite finishing 7th in season 2019–20, HSBC did not return to the league for the current season.
| Team | Ground | Capacity | City/Area | Previous season |
| Brockleians | Civil Service Sports Ground | Eltham, London | Promoted from Kent 2 | |
| Cliffe Crusaders | Recreation Ground | Cliffe, Kent | 6th | |
| Faversham | Recreation Ground | Faversham, Kent | 5th | |
| Footscray | Footscray Playing Fields | New Eltham, London | Promoted from Kent 2 | |
| Hastings & Bexhill | William Parker Lower School | Hastings, East Sussex | 4th | |
| King's College Hospital | Dulwich Sports Ground | Dulwich, London | 3rd | |
| New Ash Green | New Ash Green Sports Pavilion | New Ash Green, Kent | 8th | |
| Old Williamsonians | Sir Joseph Williamson's Mathematical School | Rochester, Kent | Relegated from London 3 SE | |
| Park House | Barnet Wood Road | Hayes, London | Relegated from London 3 SE |
Season 2020–21
On 30 October 2020 the RFU announced that due to the coronavirus pandemic a decision had been taken to cancel Adult Competitive Leagues for the 2020/21 season meaning Kent 1 was not contested.Participating clubs 2019–20
| Team | Ground | Capacity | City/Area | Previous season |
| Cliffe Crusaders | Recreation Ground | Cliffe, Kent | Promoted from Kent 2 | |
| Cranbrook | Tomlin Ground | Cranbrook, Kent | 4th | |
| Faversham | Recreation Ground | Faversham, Kent | Promoted from Kent 2 | |
| Hastings & Bexhill | William Parker Lower School | Hastings, East Sussex | Relegated from London 3 SE | |
| HSBC | HSBC Sports Ground | Beckenham, London | 6th | |
| King's College Hospital | Dulwich Sports Ground | Dulwich, London | 7th | |
| New Ash Green | New Ash Green Sports Pavilion | New Ash Green, Kent | 9th | |
| Old Gravesendians | Fleetway Sports Ground | Gravesend, Kent | 5th | |
| Southwark Lancers | Burgess Park | Camberwell, London | 3rd | |
| Whitstable | Reeves Way | Chestfield, Kent | 8th |