Final Fantasy X-2

The Samurai dressphere can be found in Kilika as early as Chapter 3.

Final Fantasy XI

Samurai appears as one of the advanced jobs available to players who have reached level 30. The quest involved in becoming a samurai starts in the pirate city, Norg. Ultimately, characters must travel to The Sanctuary of Zi'Tah to fight a treant and then return to norg to claim his prize; the right to level up as a samurai.

Samurai are significantly different than their previous incarnations. They are described as demon killers and they have abilities like Warding Circle that help raise party members resistances to demons.

The real boon of the Samurai, though, is his weapon, the Great Katana, his Store TP ability that allows him to accumulate TP faster than other melee classes and his Meditate ability that will almost instantly give him 100% TP. TP in Final Fantasy XI is used to do Weapon skills and when weapon skills are done in a particular order they will make a Skillchain causing massive damage. Great Katanas are also notable in the game as being easy to make skill chains with so, while the Samurai might not be king of damage, he can be a major force multiplier and a party player.