Prostitute

A prostitute is someone who engages in sexual acts for money. Prostitutes appear in all the Fallout games.

Fallout

 * Sinthia, a hooker in Junktown who you save from a raider

Fallout 2

 * Cat's Paw brothel, run by Miss Kitty
 * Fannie Mae at the Malamute Saloon
 * The Hole (Den), run by Frankie

Fallout 3

 * Nova at Moriarty's Saloon
 * Silver, an ex-prostitute living in Springvale
 * Seneca Clarkson, a pre-war prostitute found dead in room 302 of the Statesman Hotel
 * Trinnie, who spends most of her time at the The Muddy Rudder in Rivet City
 * Destiny Chao, mentioned in Herbert "Daring" Dashwood's terminal as proprietor of Blue Destiny Brothel
 * A brothel section of the Evergreen Mills Bazaar, run by Madame (unnamed in game)
 * Cherry and Fantasia at Dukov's Place ("party girls" who exchange sexual favors for Dukov's protection, unknown if they actually are prostitutes)
 * Brianna, a member of The Family who offers her services to the male members.
 * Susan Lancaster at Tenpenny Tower

Fallout: New Vegas

 * Various hookers, including robots, can be found on the New Vegas Strip, Gomorrah and/or the Mojave wasteland.

Fallout Tactics

 * Random ones in Quincy (Ghouls and 1 Super Mutant)

Fallout: Brotherhood of Steel

 * Ruby, a prostitute from Carbon who asks you to find her cat, Mr. Pussy

Van Buren

 * Marianne, owned by Anson.
 * Mary-Jo, a nympho trog in Hoover Dam