The athlete penned an op-ed for The Huffington Post, in which he called Girls' characters "ignorant" and panned Donald Glover's casting as an African-American love interest for Hannah.
[Left: Lena Dunham / Right: Kareem Abdul-Jabbar]
"A black dildo would have sufficed and cost less," Abdul-Jabbar quipped in his article. "I don't believe that people of colour, sexual preference, or gender need to be shaken indiscriminately into every series like some sort of exotic seasoning.
"If the story calls for a black character, great... But this really seemed like an effort was made to add some colour - and it came across as forced."
Girls creator and star Dunham was later reached for comment about Abdul-Jabbar's opinion piece at the DGA Awards.
"I have to admit, I only skimmed it," Dunham admitted to E! News. "It seemed like a mixed review and I have a policy about not reading those."
[The cast of 'Girls']
She continued: "[Abdul-Jabbar's] review of Girls was called to my attention on Twitter. And I blurted out to my dad, 'Kareem Abdul-Jabbar reviewed Girls'. And he said, 'I don't even know how to process that. I don't even know what that means'."
Dunham went on to claim that she would love to cast Abdul-Jabbar on Girls, following his recent guest spot on New Girl.
"If we're ever in need of a Kareem type, he's definitely the first person I'd go to," she said.
Girls recently took the 'Best Television Series (Comedy)' prize at the Golden Globe Awards.
HBO airs Girls on Sundays at 9pm.