| 2019 Kilkenny Junior Hurling Championship | |
| Dates: | 3 September 20 October 2019 |
| Teams: | 19 |
| Sponsor: | JJ Kavanagh and Sons |
| Champions: | O'Loughlin Gaels |
| Count: | 3 |
| Runners-Up: | Conahy Shamrocks |
| Relegated: | none |
| Previous Year: | 2018 |
| Previous Tournament: | 2018 Kilkenny Junior Hurling Championship |
| Next Year: | 2020 |
| Next Tournament: | 2020 Kilkenny Junior Hurling Championship |
The 2019 Kilkenny Junior Hurling Championship was the 109th staging of the competition since its establishment by the Kilkenny County Board in 1905 and ran from 3 September to 20 October 2019.
The competition consisted of 19 teams divided into sections A and B. Section A comprised 12 junior-grade clubs represented by their first-team panels. Section B comprised seven senior/intermediate-grade clubs represented by their second-team panels. Three teams from Section A (quarter-final winners) and one from Section B (final winner) advanced to the combined semi-final stage. [1]
O'Loughlin Gaels defeated Conahy Shamrocks by 117 to 115 in the final on 20 October 2019 at Nowlan Park. [2] As 2019 junior champions they were promoted to the 2020 Kilkenny Intermediate Hurling Championship.
No team was relegated from the 2019 junior championship.