2020 Kilkenny Junior Hurling Championship

The 2020 Kilkenny Junior Hurling Championship was the 110th staging of the competition since its establishment by the Kilkenny County Board in 1905 and ran from 19 August to 3 October 2020.

The competition consisted of 20 teams divided into sections A and B. Section A comprised 13 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.

Conahy Shamrocks defeated Dicksboro by 314 to 019 (after extra-time) in the final on 3 October 2020 at Nowlan Park. As 2020 junior champions they were promoted to the 2021 Kilkenny Intermediate Hurling Championship.

Section A

 * Barrow Rangers
 * Blacks & Whites
 * Cloneen
 * Conahy Shamrocks
 * Emeralds
 * Galmoy
 * Graignamanagh
 * Kilmacow
 * Mooncoin
 * Piltown
 * Slieverue
 * Tullogher–Rosbercon
 * Windgap

Section B

 * Ballyhale Shamrocks
 * Clara
 * Dicksboro
 * Erin's Own
 * James Stephens
 * Rower–Inistioge
 * St Patrick's