Honestly, it’s one of those things people just assume they know. You see the high-profile engagements, the stunning red carpet walks with handsome actors, and the headlines about family life, and you figure she’s walked down the aisle at least once. But if you're looking for a name to put in the blank of who was Sienna Miller married to, the answer is actually quite short.
She wasn't.
Despite being one of the most talked-about women in British cinema for over two decades, Sienna Miller has never actually been married. She’s been close—multiple times. We’re talking "diamond on the finger, planning the big day" close. But for various reasons, from public scandals to "hitting a rough patch," the Alfie star never officially said "I do." It’s a bit of a Hollywood anomaly, especially considering how many of her relationships felt like permanent fixtures in the tabloids.
Who Was Sienna Miller Married To? The Real Story Behind the Rings
It's easy to see why the confusion exists. If you grew up in the 2000s, you probably remember the absolute "madness and chaos"—her words—surrounding her and Jude Law. They were the "it" couple of 2004. He proposed on Christmas Day, and for a few months, it felt like a royal wedding was imminent. Then the news broke. Law's affair with his children’s nanny became global news, and the engagement eventually dissolved. They tried again in 2009, but the spark was gone for good by 2011.
Then came Tom Sturridge. This was a different vibe entirely. They were together for four years, got engaged, and had a daughter, Marlowe, in 2012. Many fans still refer to him as her "ex-husband" just because of how settled they seemed, but they never actually married. They split in 2015, yet they remain arguably the most successful co-parents in Hollywood. They literally do bedtime together every day. Sturridge lives just a few blocks away, and Sienna still calls him her "best friend in the entire world."
The Engagement That Almost Was: Lucas Zwirner
Most recently, in early 2020, it looked like the streak might finally end. Miller began wearing a massive diamond ring after dating art gallerist Lucas Zwirner for about a year. People were ready to update the Wikipedia page. However, by September of that same year, she had reportedly called it off. Reports suggest she was the one to end things after they hit a "rough patch" that they just couldn't navigate.
It’s interesting because Sienna hasn't been shy about the idea of marriage. She told The Sunday Times a few years back that she’d be open to it. She just hasn't pulled the trigger.
The New Chapter: Oli Green and Growing the Family
Since 2021, Sienna has been with actor and model Oli Green. He’s 15 years her junior, a fact that people love to obsess over, but she’s been pretty clear that he’s "wise for his age." They welcomed a daughter together in late 2023, and as of early 2026, they are actually expecting their second child together (her third total).
Even with two kids together and a relationship that looks incredibly solid, there’s no official word on a wedding. They seem content living that "boho chic" lifestyle without the legal paperwork.
Why the Public Gets It Wrong
We have this habit of conflating "having children" or "being engaged" with "being married." In Sienna's case, her life has been so public—and her partner choices so high-profile—that the narrative of a "divorce" or "ex-husband" feels more dramatic than "ex-fiancé."
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- Jude Law: Engaged twice, never married.
- Tom Sturridge: Engaged, one child, never married.
- Lucas Zwirner: Reported engagement, never married.
- Oli Green: Current partner, two children, currently not married.
Basically, the "Sienna Miller married" search query is a bit of a ghost hunt. She’s built a life on her own terms, freezing her eggs at 40 to take the "existential threat" of biology off the table and choosing partners based on connection rather than a traditional timeline.
If you're trying to keep track of her current status, focus on her work in projects like Horizon or her growing family with Oli Green. She’s clearly more interested in the reality of her relationships than the title of "wife."
To get the most accurate picture of her current life, you can look into her recent interviews with Vogue or Elle, where she discusses the shift from the "paparazzi madness" of her 20s to the more grounded, albeit still busy, life she leads as a mother of three in 2026.