| 1946 Railway Cup | |
| Dates: | 17 February – 17 March 1945 |
| Teams: | Connacht Leinster Munster Ulster |
| Champions: | Munster |
| Champions Captain: | Ger Cornally |
| Count: | 14 |
| Matches: | 3 |
| Goals: | 13 |
| Points: | 49 |
| Top Scorer: | Josie Gallagher (1-12) |
| Previous Year: | 1945 |
| Previous Tournament: | 1945 Railway Cup Hurling Championship |
| Next Year: | 1947 |
| Next Tournament: | 1947 Railway Cup Hurling Championship |
The 1946 Railway Cup Hurling Championship was the 20th series of the inter-provincial hurling Railway Cup. Four matches were played between 11 February and 17 March 1945. It was contested by Connacht, Leinster, Munster and Ulster.
Munster entered the championship as the defending champions.
On 17 March 1946, Munster won the Railway Cup after a 3-12 to 4-08 defeat of Connacht in the final at Croke Park, Dublin. This was their 14th title over all and their fifth title in succession.
Connacht's Josie Gallagher was the Railway Cup top scorer with 1-12.
Semi-finals
Final