Stage 19 of the 2023 Giro d'Italia was a mountain stage that took place on .

The stage started in Longarone and finished in Tre Cime di Lavaredo (Rif. Auronzo), starting at with an expected finish at (average speed of 34 km/h).

The total distance of the stage was 183.9 km. The stage included 0 categorized climb(s) and 0 intermediate sprint(s), and had a total elevation gain of 6177 m, and a total descent of -4314 m.