Former Homeland Security Secretary Kristi Noem has filed for divorce from husband Bryon Noem after 34 years of marriage, court documents show, citing irreconcilable differences.
Noem submitted the divorce paperwork on April 6 in Hamlin County, South Dakota. The filing listed irreconcilable differences as the basis for ending the marriage that began on May 23, 1992.
The documents did not post to the online court service until this week, which is when the public record caught up with a private decision already months in motion.
The Hill reported the Hamlin County filing after local coverage first flagged the paperwork, confirming the former governor and Cabinet secretary had moved to dissolve the marriage in her home state.
Bryon Noem, who runs an insurance business in South Dakota, gave a brief response when Nexstar’s KELO reached him.
“I can’t comment right now,” he said.
Attempts to reach Kristi Noem for comment on the filing were unsuccessful.
Just The News reported that the couple shares three adult children, Kassidy, 31; Kennedy, 29; and Booker, 23, and that the divorce comes roughly six months after she left the Homeland Security post.
The same core facts appear across multiple outlets: a long marriage, a formal filing, and irreconcilable differences as the stated ground. The Washington Examiner likewise described a 34-year marriage ending on that basis, citing documents obtained by Dakota News Now.
Those details match the Hamlin County record on the wedding date, the April filing, and the legal ground named in the paperwork.
Readers tracking the personal fallout can also find earlier coverage of the divorce filing that followed months of strain in the marriage.
Noem’s public career ran straight through the decades she spent as Bryon’s wife. She served as South Dakota governor from Jan. 5, 2019, until Jan. 25, 2025, when she resigned to become secretary of homeland security.
She was later removed from that Cabinet post and named Special Envoy for The Shield of the Americas. Congressional oversight followed her at both stages of federal service, including a March 3, 2026, appearance tied to Senate Judiciary Committee scrutiny and a separate House Judiciary Committee hearing at which she testified.
Bryon attended portions of the House hearing. Weeks later, in late March, a tabloid leaked a photo of him. He did not attend the Aug. 6 unveiling of her statue in Pierre.
Family members were not caught off guard. The New York Post interviewed Noem’s mother, Corinne Arnold, who said her daughter confided the divorce plans in late spring and made the intention plain at a grandchild’s birthday party.
"It has been difficult, but we knew this was coming, that they were going to get divorced."
Arnold recalled pressing her daughter on whether the marriage might still be repaired.
"What’s the deal? Are you going to get together again?’ And she said: ‘No. No. We’re going to get a divorce."
Arnold also said Noem indicated she had a lawyer in Sioux Falls. That account lines up with the later Hamlin County filing and with prior reporting on the mother’s confirmation of the planned split.
Just The News noted public reports of Noem’s ongoing ties to Corey Lewandowski and separate allegations about Bryon Noem’s private conduct. Those claims sit outside the four corners of the divorce petition, which sticks to irreconcilable differences and does not spell out a detailed narrative of blame.
Lewandowski, a former Trump campaign manager, has been linked to Noem in political coverage for years. In 2021, a conservative online publication accused the two of an affair. Noem rejected that charge in blunt terms on social media.
She called the allegations “rumors” and “total garbage and a disgusting lie.” She added: “These old, tired attacks on conservative women are based on a falsehood that we can’t achieve anything without a man’s help. I love Bryon. I’m proud of the God-fearing family we’ve raised together. Now I’m getting back to work.”
House hearing questions later touched Lewandowski’s role connected to DHS while she led the department. Recent months again put the two names in the same headlines, including after they were spotted together at a Minnesota lake following news of the marriage break.
Political maneuvering around Lewandowski has continued in parallel, including talk of future Trump-world roles and even a floated Noem primary challenge against John Thune. None of that is written into the Hamlin County petition. The legal document is narrower: a marriage of more than three decades, a filing in April, and irreconcilable differences as the ground.
Open questions remain. The public reporting has not produced a docket number, full petition text, or any detailed terms on assets. Noem has not issued a public statement on the divorce itself. Bryon’s only on-record line so far is the refusal to comment.
What is settled on paper is simpler. A high-profile conservative who governed South Dakota, ran Homeland Security, and still holds a special envoy role has moved in state court to end her marriage. The husband she praised in 2021 as a partner in a God-fearing family is the other party named in that filing.
Private breakdowns among public officials always draw a crowd. The record here shows a long marriage, a clean legal ground, adult children, and a woman who already told her mother the decision was final before the paperwork hit the online docket.
Voters hired Kristi Noem for borders, laws, and executive grit, not for a perfect home life, and the court file does not revise that job description.