| 1972–73 1. Slovenská národná hokejová liga season | |
| League: | 1. SNHL |
| Sport: | Ice hockey |
| No Of Teams: | 12 |
| Season: | Regular season |
| Season Champ Name: | League Champion |
| Season Champs: | TJ Lokomotíva Bučina Zvolen |
| Nextseason Year: | 1973–74 |
| Prevseason Year: | 1971–72 |
The 1972–73 1. Slovenská národná hokejová liga season was the 4th season of the 1. Slovenská národná hokejová liga, the second level of ice hockey in Czechoslovakia alongside the 1. Česká národní hokejová liga. 12 teams participated in the league, and TJ Lokomotíva Bučina Zvolen won the championship. TJ ZPA Prešov and VTJ Dukla Trnava relegated.