There are not a lot of stations that a Parisian dweller would consider to be a "railway station" AND "inside Paris".

I'd say mostly Montparnasse, Gare de Lyon, Gare de l'Est, Gare du Nord, and Austerlitz.

RER, Transilien, Metro and Tramway stations would not count as "train stations" in the eyes of a Parisian/French person, and places outside of the Périphérique (the ring road that follows the old defensive "Thier walls" of the city) would not count as "Paris" for this kind of conversation.