January |
| 14 Jan | Red, Orange & Green Ball Leinster Tour Naas | Tennis10s | Green | Naas LTC | Leinster |
| 14 Jan | Red, Orange & Green Ball Leinster Tour Naas | Tennis10s | Red | Naas LTC | Leinster |
| 17 Jan | | | 500 | Galway | Connacht |
| 21-28 Jan | NTC Under 12 WTN event | Junior | WTN | NTC | Leinster |
February |
| 4 Feb | Red, Orange & Green Ball Leinster Tour Claremont RU | Tennis10s | Red | Claremont RU | Leinster |
| 6 Feb | Red, Orange & Green Ball Leinster Tour Sutton LTC | Tennis10s | Orange | Sutton LTC | Leinster |
| 6 Feb | Red, Orange & Green Ball Leinster Tour Sutton LTC | Tennis10s | Green | Sutton LTC | Leinster |
| 10-18 Feb | ITF International | Junior | International | Castleknock | Leinster |
| 11 Feb | Red, Orange & Green Ball Leinster Tour Carlow LTC | Tennis10s | Orange | Carlow | Leinster |
| 11 Feb | Red, Orange & Green Ball Leinster Tour Carlow LTC | Tennis10s | Green | Carlow | Leinster |
| 13-17 Feb | TE-14- Ireland 1 | Junior | International | Dublin | Leinster |
| 13-18 Feb | Wallace Park Junior Tennis Championships 2023 | Junior | Tour 500 | Lisburn | Ulster |
| 15 Feb | Red, Orange & Green Ball Leinster Tour Sutton LTC | Tennis10s | Green Doubles | Sutton LTC | Leinster |
| 16-18 Feb | Kilkenny Tour 100 u12 u14 u16/18 February '23 | Junior | 100 | Kilkenny | Leinster |
| 16-19 Feb | Galway Junior Indoor Tour 200 | Junior | 200 | Galway | Connacht |
| 16-19 Feb | Galway Junior Indoor Tour 500 | Junior | 500 | Galway | Connacht |
| 17-18 Feb | TTC Tour 100 | Junior | 100 | Templeogue | Leinster |
| 18-19 Feb | National Tennis Centre U16 Tour 500 | Junior | 500 | NTC | Leinster |
| 25 Feb | Red, Orange & Green Ball Leinster Tour Naas | Tennis10s | Red | Naas LTC | Leinster |
| 25 Feb | Red, Orange & Green Ball Leinster Tour Naas | Tennis10s | Orange | Naas LTC | Leinster |
March |
| 4 Mar | Red, Orange & Green Ball Leinster Tour Charleville | Tennis10s | Orange | Charleville LTC | Leinster |
| 4 Mar | Red, Orange & Green Ball Leinster Tour Claremont RU | Tennis10s | Green | Claremont RU | Leinster |
| 11 Mar | Red, Orange & Green Ball Leinster Tour Greystones | Tennis10s | Orange | Malahide LTC | Leinster |
| 11 Mar | Red, Orange & Green Ball Leinster Tour Malahide | Tennis10s | Green | Malahide LTC | Leinster |
| 17-19 Mar | O' Keeffe Orthodontics Tour 500 Singles Event 2023 | Junior | 500 | Waterford | Munster |
| 19 Mar | Red, Orange & Green Ball Leinster Tour DCU | Tennis10s | Red | DCU | Leinster |
| 25 Mar | Red, Orange & Green Ball Leinster Tour Glenageary | Tennis10s | Green | Glenageary LTC | Leinster |
| 26 Mar | Red, Orange & Green Ball Leinster Tour Glasnevin | Tennis10s | Orange | Glasnevin LTC | Leinster |
| 31 Mar-2 Apr | Junior South of Ireland Tour 500 | Junior | 500 | Limerick | Munster |
April |
| 1 Apr | Red, Orange & Green Ball Leinster Tour Naas | Tennis10s | Red | Naas LTC | Leinster |
| 1 Apr | Red, Orange & Green Ball Leinster Tour Naas | Tennis10s | Green | Glasnevin LTC | Leinster |
| 1-8 Apr | Brookfield Tour 500 Junior Open 2023 | Junior | 500 | Dublin | Leinster |
| 2-7 Apr | Lisburn Junior Open | Junior | 500 | Lisburn | Ulster |
| 3-4 Apr | Junior South of Ireland Tour 100 and Tennis Tens | Junior | 100 | Limerick | Munster |
| 3-10 Apr | Ballyseedy Carrigaline Junior Open Tour 1000 and 100 | Junior | 1000 | Carrigaline | Munster |
| 7-10 Apr | Templeogue Junior Open Tour 200 | Junior | 200 | Dublin | Leinster |
| 7-16 Apr | National Junior Open Templeogue Tennis Club | Junior | 1500 | Dublin | Leinster |
| 11 Apr | Red, Orange & Green Ball Leinster Tour Greystones | Tennis10s | Green | Greystones LTC | Leinster |
| 12 Apr | Red, Orange & Green Ball Leinster Tour Greystones | Tennis10s | Orange | Greystones LTC | Leinster |
| 12 Apr | Red, Orange & Green Ball Leinster Tour Sutton LTC | Tennis10s | Green | Sutton LTC | Leinster |
| 12-13 Apr | Kilkenny Tour 200 Easter u12 u14 | Junior | 200 | Kilkenny | Leinster |
| 15 Apr | Red, Orange & Green Ball Leinster Tour Naas | Tennis10s | Red | Naas LTC | Leinster |
| 15 Apr | Red, Orange & Green Ball Leinster Tour Naas | Tennis10s | Green | Naas LTC | Leinster |
| 21-23 Apr | Larkspur Park Junior Open Week 500 2023 | Junior | 500 | Larkspur | Munster |
| 22 Apr | Red, Orange & Green Ball Leinster Tour Donabate | Tennis10s | Orange | Donabate Portrane TC | Leinster |
| 22 Apr-1 May | KJ Glass Castleknock Junior Open 2023 | Junior | 1000 | Dublin | Leinster |
| 28 Apr-1 May | 2023 Smyths Toys Claremorris Junior Open | Junior | 500 | Claremorris | Connaught |
May |
| 5-7 May | Glasnevin Junior Open 2023 | Junior | 500 | Dublin | Leinster |
| 6-14 May | 2023 East Cork Tour 500/100 Junior Open | Junior | 500 | Lower Aghada | Munster |
| 6-14 May | Mullingar Tour 500 Junior Open sponsored by SPECSAVERS | Junior | 500 | Mullingar | Leinster |
| 7 May | Red, Orange & Green Ball Leinster Tour Claremont | Tennis10s | Orange | Claremont RU | Leinster |
| 7 May | Red, Orange & Green Ball Leinster Tour Glenalbyn | Tennis10s | Green | Glenalbyn LTC | Leinster |
| 20 May | Red, Orange & Green Ball Leinster Tour DCU | Tennis10s | Orange Doubles | DCU | Leinster |
| 20 May | Red, Orange & Green Ball Leinster Tour DCU | Tennis10s | Green Doubles | DCU | Leinster |
| 27-28 May | The Nomadic Malahide Tour 100 Junior Open 2023 | Junior | Tour 100 | Dublin | Leinster |
| 28 May | Red, Orange & Green Ball Leinster Tour Claremont RU | Tennis10s | Red | Claremont RU | Leinster |
June |
| 2-5 Jun | 2023 Rathgar Junior Open Tour 200,100 and Tennis 10s | Junior | Junior | Dublin | Leinster |
| 2-5 Jun | The Nomadic Malahide Tour 500 Junior Open 2023 | Junior | 500 | Dublin | Leinster |
| 10 Jun | Red, Orange & Green Ball Leinster Tour DCU | Tennis10s | Orange | DCU | Leinster |
| 10 Jun | Red, Orange & Green Ball Leinster Tour DCU | Tennis10s | Green | DCU | Leinster |
| 10-17 Jun | Bray Junior Open 500/100 Junior Open | Junior | T500 | Bray | Leinster |
| 11 Jun | Red, Orange & Green Ball Leinster Tour Clontarf | Tennis10s | Green | Clontarf LTC | Leinster |
| 16-24 Jun | KPMG Carrickmines Junior Open 2023 | Junior | T1000 | Dublin | Leinster |
| 18 Jun | Red, Orange & Green Ball Leinster Tour DCU | Tennis10s | Red | DCU | Leinster |
| 24 Jun-1 Jul | Beauchamps Leinster Junior Open T1000 2023 | Junior | T1000 | Dublin | Leinster |
July |
| 1-8 Jul | Naas Junior Open | Junior | 500/100 | Naas | Leinster |
| 3-10 Jul | Leinster Tennis T100 U12 | Junior | T100 | DCU | Leinster |
| 7 Jul | Red, Orange & Green Ball Leinster Tour DCU | Tennis10s | Orange | DCU | Leinster |
| 8 Jul | Red, Orange & Green Ball Leinster Tour WW Leopardstown | Tennis10s | Red | WestWood Leopardstown | Leinster |
| 8-15 Jul | Kilkenny Poe Kiely Hogan Lanigan Tour 500, 100 &U10s Junior Open Week | Junior | 500/100 | Kilkenny | Leinster |
| 8-15 Jul | Zurich Greystones Junior Open 2023 | Junior | 500/100 | Greystones | Leinster |
| 11-15 Jul | Longford Junior Open Week T200 | Junior | T200 | Longford | Leinster |
| 14 Jul | Red, Orange & Green Ball Leinster Tour DCU | Tennis10s | Green | DCU | Leinster |
| 15-16 Jul | Tour 200 @ Templeogue Tennis Club | Junior | T200 | Templeogue Dublin | Leinster |
| 15-22 Jul | East of Ireland Junior Open 2023 sponsored by MSL Park Motors | Junior | 1000 | Sutton | Leinster |
| 17-24 Jul | Leinster Tennis T100 U14 | Junior | 100 | DCU | Leinster |
| 21 Jul | Red, Orange & Green Ball Leinster Tour DCU | Tennis10s | Orange | DCU | Leinster |
| 22-29 Jul | Leopardstown Junior Open | Junior | 500/100 | Dublin | Leinster |
| 28 Jul | Red, Orange & Green Ball Leinster Tour DCU | Tennis10s | Green | DCU | Leinster |
| 29 Jul-5 Aug | Clontarf LTC Tour 500/100 Junior Open | Junior | 500/100 | Clontarf | Leinster |
August |
| 4-12 Aug | Hunter Estate Agent Donnybrook Junior Open | Junior | | | |
| 11-19 Aug | 2023 William Fry Junior Lawn Tennis Championships of Ireland | Junior | | | |
| 19-27 Aug | Ulster JUnior Hardcourt Championships 2023 | Junior | 1000 | Belfast | Ulster |
| 27 Aug | Leinster Tennis August T100 U12 | Junior | T100 | DCU | Leinster |
September |
| 1-3 Sep | St Annes Tour 500 Singles Event U14 &16 Open 2023 | Junior | 500 | Waterford | Munster |
| 23 Sep | Red, Orange & Green Ball Leinster Tour Malahide | Tennis10s | Orange | Malahide LTC | Leinster |
| 23 Sep | Red, Orange & Green Ball Leinster Tour Portmarnock | Tennis10s | Green | Portmarnock TC | Leinster |
October |
| 7 Oct | Red, Orange & Green Ball Leinster Tour Claremont RU | Tennis10s | Red | Claremont RU | Leinster |
| 7 Oct | Red, Orange & Green Ball Leinster Tour Donabate TC | Tennis10s | Orange | Donabate Portrane TC | Leinster |
| 7 Oct | Red, Orange & Green Ball Leinster Tour Glasnevin | Tennis10s | Green | Glasnevin LTC | Leinster |