JERRY SEINFELD ad­mits he suffers from depression, and if it weren’t for his three chil­dren he’d kill himself!

The 58-year-old comedian – who’s banked an $800 million fortune thanks largely to his TV sitcom “Seinfeld” – also blamed his love life for his blues.

Confessing that he fights an offstage “tendency toward de­pression,” Seinfeld said in a recent interview: “If it wasn’t for my kids, I’m pretty much done with living. I could kill myself. Now, there’s something else to live for.”

He also implied that “romantic dissatisfaction” was something that used to depress him.

Seinfeld wed the former Jes­sica Sklar, 41, now a successful cookbook author, in 1999. They’re the parents of daughter Sascha, 12, and sons Julian, 9, and Shep­herd, 7.

The family splits its time be­tween a palatial apartment in New York City’s Upper West Side and a sprawling oceanfront estate in the Hamptons.

But pals won­der whether he’s still pining for his ex-flame Shoshanna Lon­stein, who was an 18-year-old high school graduate when she started dating Seinfeld, then 39. The two dated for four years before his workaholic ways re­portedly led to a breakup.

“The interview Jerry gave wasn’t exactly a ringing en­dorsement for his marriage to Jessica, although it’s clear he certainly loves his kids and being a dad,” a friend told The ENQUIRER.

“It’s also clear he still hasn’t found real hap­piness and remains somewhat depressed. Pals believe he really nev­er got over his bustup with Shoshanna and wonder if he would be happier today had they been able to make it work.”