Stanford Blatch often referred to as the show's "Fifth Lady", is Carrie's best friend outside of the three women. A gay talent agent with a sense of style parallel only to Carrie's, you get the impression that they have a long standing relationship built within their younger, wilder days on the New York City club and bar scene. The only supporting character to receive his own storylines (occasionally), he represents the show's most constant gay point of view to sex on the show; generally based around the physical insecurities and inadequacies of someone who doesn't "have that gay look". In the last two seasons of the show, he is partnered with Broadway dancer, Marcus Adente.

Anthony Marentino is an event planner who becomes close to Charlotte after styling her first wedding - he goes on to style Charlotte's H&G photo shoot, her second wedding and Carrie's book release party. He is not self-effacing like Stanford and freely presents no-nonsense (often bawdy) advice to Charlotte. (Upon hearing that she hadn't had sex since her divorce, he exclaims; "if you don't put something 'in there' soon it'll grow over!")

Magda the Ukrainian housekeeper-cum-nanny who was introduced in the third season becomes an ersatz mother figure and a thorn in Miranda's side. Her attempts to push traditional marriage/motherhood attitudes on Miranda are both subtle (buying her a rolling pin "To make pies. It's good for a woman to make pies.") and intrusive (replacing her vibrator with a statuette of The Virgin Mary).