It is the rumor that simply refuses to die. Honestly, you’ve probably seen the side-by-side photos on TikTok or Twitter—those grainy shots of a young Khloé Kardashian compared to various men from the family’s past. People have been obsessing over who is Khloe Kardashian father for nearly two decades now, and even in 2026, the theories still pop up every time she posts a selfie.
Some people are convinced it’s O.J. Simpson. Others swear it’s the family’s former hairdresser. But if you look at the actual evidence, the paper trail, and the DNA results that have surfaced over the years, the story is both simpler and more complicated than a simple tabloid headline.
The Man Who Raised Her: Robert Kardashian Sr.
For Khloé, there has only ever been one answer. Robert Kardashian Sr., the high-profile attorney famous for his role on O.J. Simpson’s "Dream Team," is her father. Full stop.
Robert died in 2003 after a brutal battle with esophageal cancer. He raised Khloé, loved her, and by all accounts, never once treated her as anything other than his biological daughter. In the early seasons of Keeping Up with the Kardashians, Khloé often talked about how much she missed him. She has his name. She has the memories. To her, the "biological" question is almost an insult to the man who was there for every birthday and heartbreak.
But the internet isn't always so sentimental.
Why the Rumors Started in the First Place
The "mystery" mostly stems from two things: Kris Jenner’s own honesty and the simple reality of genetics.
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Kris Jenner famously admitted in her memoir, Kris Jenner... and All Things Kardashian, that she was unfaithful during her marriage to Robert. She’s been open about having an affair with a man she called "Ryan" (later revealed to be Todd Waterman). Once that was public knowledge, the floodgates opened. People started looking at Khloé—who is significantly taller than Kim and Kourtney and had different features growing up—and started doing "paternity math" that didn't necessarily add up.
The O.J. Simpson Theory
This is the one that just won't go away. Because Robert Kardashian was so close to O.J., and because Kris was best friends with Nicole Brown Simpson, the conspiracy theorists went wild.
O.J. himself tried to kill this rumor before he passed away. In a video he posted to Twitter (now X) in 2019, he stated point-blank that he never had a romantic or sexual relationship with Kris. He said he was proud of the girls, but he wasn't their dad. Even recently, on The Kardashians, Kim and Khloé joked about it when they found Robert’s old Bible, with Khloé playfully calling O.J. her "other dad" just to poke fun at the trolls. It’s reached a point where the family just uses the rumor for comic relief.
The Alex Roldan Connection
If you spend five minutes on Kardashian subreddits, you’ll see the name Alex Roldan. He was Kris Jenner’s hairdresser for years. Fans point to the "uncanny" physical resemblance between a young Khloé and Roldan, especially their height and bone structure.
There is also the middle name theory. Khloé’s middle name is Alexandra. Some fans think that’s a "hint" dropped by Kris, though the family has never acknowledged this as anything more than a coincidence. Despite the side-by-side photos, there has never been any formal evidence linking Roldan to Khloé’s paternity.
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What Does the DNA Actually Say?
We’ve actually seen DNA results on camera, though they were often framed in ways that left people wanting more.
Back in Season 15 of KUWTK, the sisters took 23andMe tests. Khloé’s results showed she was Middle Eastern, which is a massive piece of the puzzle. Robert Kardashian Sr. was of Armenian descent. If Khloé were the biological daughter of someone with no Armenian heritage, those markers wouldn't be there.
More recently, Kris Jenner pointed to Khloé’s son, Tatum, as the final "proof." She’s mentioned several times that Tatum looks exactly like her late husband Robert and her son Rob. In the world of Kardashian genetics, the "reincarnation" of features in the grandkids is often used as the ultimate rebuttal to the haters.
The Real Impact of the Speculation
It’s easy to forget that Khloé is a person behind the headlines. She’s dealt with these questions since she was a teenager. Imagine being told by millions of strangers that the man you loved and lost isn't actually your father.
She’s been very clear:
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- She refused a formal paternity test on the show for years because she felt it was disrespectful to Robert’s memory.
- She considers the "biological" obsession to be "tasteless."
- She has stated that even if a test showed something different, it wouldn't change who her "dad" is.
Putting the Pieces Together
When you look at the facts—the 23andMe results showing Middle Eastern ancestry, Robert's own insistence that she was his, and the denials from other alleged candidates—the "mystery" starts to look more like a bored internet obsession than a real secret.
Genetics are weird. Siblings don't always look like clones of each other. Khloé might be the "tall one" with the lighter hair, but that doesn't mean there's a conspiracy.
How to Navigate the Noise
If you’re following this story, it’s best to stick to the primary sources rather than "blind items" or edited TikTok clips.
- Watch the source material: Season 15 of KUWTK covers the ancestry results in detail.
- Respect the family's boundaries: Khloé has explicitly stated her father is Robert Kardashian, and at a certain point, that's the only answer that matters for her life.
- Check the dates: Many "new" rumors are just old 2012 tabloids being recycled for clicks.
The bottom line is that while the public might never stop whispering about who is Khloe Kardashian father, the woman herself has moved on. She’s focused on raising her own kids, True and Tatum, and keeping the legacy of the man who raised her alive.
For those looking for a definitive "gotcha" moment, it's likely never coming. The family has closed ranks on this, and honestly, can you blame them? Robert Kardashian Sr. is the father on her birth certificate, the man in her childhood photos, and the person she calls "Dad" to this day. That is the only reality that exists for the Kardashian family.