Common:
* musician
* technician
* physician
Less Common:
* magician
* optician
* politician
* electrician
Other (not all words are actually used in English):
* barbarian
* biblioclast
* cabalistic
* caesarian
* celestial
* charlatan
* clerician
* comedian
* cosmopolitan
* custodian
* despotic
* draconian
* ecstatic
* electician
* epigrammarian
* ethician
* iconoclast
* logician
* magician
* mechanician
* mercenary
* misogynist
* necrophagist
* pedantic
* propagandist
* sacristan
* scholastic
* stoic
* sycophant
* theologian
* titanic
* tyrannic
* veterinarian
* villian
Please note that many of these words are not actually used in common English, but are more relevant for academic study or specific contexts.