Yes, Caveats:
Witcher 1 is OLD and plays like an old game.
Witcher 2 is less old and plays better than Witcher 1, and all the controls are different.
Witcher 3 is ion my top 3 games ever, and is an excellent open world rpg. Again, all the controls change.
All 3 have adult content and some cutscenes are adult, so keep that in mind. Geralt's a thirsty guy when it comes to the ladies. Everyone swears like sailors too.
I would say start with W2, then play 3 and go back for 1 if you get deep into the lore.