Meet Nathan Andersen: Entrepreneur, Adventurer, and A.J. Cook’s Husband

Nathan Andersen may not be a big name in Hollywood, but many people know him because of his wife — A.J. Cook, the actress who plays JJ on Criminal Minds. But Nathan is much more than just a celebrity husband.

He is a businessman, a fashion designer, and a man who loves to travel and explore nature. He lives a simple life away from the spotlight and has built his own career from the ground up. In this article, we’ll take a closer look at Nathan Andersen’s life — his childhood, his work, his love story, and more.

Nathan Andersen Profile Summary

Bio Detail	Information
Full Name	Nathan Andersen
Date of Birth	May 25, 1978
Age (as of 2025)	47 years old
Zodiac Sign	Gemini
Place of Birth	United States
Nationality	American
Education	Utah Valley University (Film & Communication)
Profession	Entrepreneur, Fashion Designer
Famous For	Husband of A.J. Cook, Co-founder of Walter Sky
Marital Status	Married
Spouse	A.J. Cook (Actress, married since August 3, 2001)
Children	2 sons – Mekhai Allan Andersen & Phoenix Sky Andersen
Notable Achievement	Cancer survivor (Thyroid cancer – cancer-free since 2019)
Estimated Net Worth	$4 million (as of 2020)

Who Is Nathan Andersen?

Nathan Andersen is an American entrepreneur. He was born on May 25, 1978, in the United States. As of 2025, he is 47 years old. Many people know him as A.J. Cook’s husband, but he is also the co-founder of a fashion brand called Walter Sky.

Nathan is known for being calm, adventurous, and private. He doesn’t share much online, but when he does, it’s usually something fun, thoughtful, or family-related. He enjoys traveling, climbing, and spending time outdoors.

Nathan Andersen’s Early Life

Nathan grew up in a family that loved sports and adventure. His dad was an athlete who later became a businessman. His mom loved skiing and trying new things. His family always told him he could do anything he wanted.

As a child, Nathan enjoyed climbing trees, collecting cool stuff, and exploring new places. He wasn’t the type to sit still. His family supported his love for nature, and that helped him grow into the adventurous man he is today.

Nathan Andersen’s Career

After finishing high school, Nathan went to Utah Valley University in Salt Lake City. There, he studied film and communication. At first, he wanted to work in the entertainment world — and he did try.

He moved to Hollywood and worked in the entertainment industry for a while. But he soon realized that it wasn’t the right fit for him. He didn’t enjoy the spotlight or that kind of work. So, he made a big choice and walked away from that life.

Nathan’s Own Clothing Brand

After leaving Hollywood, Nathan joined a friend who was starting a business. He worked hard there for nearly ten years. But deep down, he still wanted to build something of his own.

That’s when he got the idea to create a clothing brand — something simple, useful, and stylish for people like him who love to travel and explore. He teamed up with his brother, Wesley Andersen, and they launched Walter Sky.

Walter Sky makes clothes that are strong, simple, and made for all kinds of weather. Nathan wanted the clothes to be perfect for people who move a lot, climb, hike, and travel. He also said the name “Walter Sky” came from a personal family idea.

At first, not everyone understood his style. Some people said no to his ideas. But Nathan didn’t give up. He worked harder, tested his designs, and slowly made the brand grow.

How Nathan Andersen Met A.J. Cook

Nathan met A.J. Cook while they were both students at Utah Valley University. They were both in film class, and that’s how their friendship started. A.J. later moved to Salt Lake City, and their bond grew stronger.

They spent time learning and supporting each other during college. They became close friends and then more than friends. Over time, their connection turned into real love. They weren’t famous back then — just two people with big dreams.

Nathan Andersen Married A.J. Cook

Nathan and A.J. Cook got married on August 3, 2001. They’ve now been married for over 20 years, and they still seem very happy together. Even though A.J. is famous, Nathan prefers to stay out of the spotlight.

A.J. often posts sweet things about Nathan on social media. She once joked that they were “just babies” when they got married, but they’ve grown stronger through the good and bad. Nathan sometimes shares fun photos of A.J., calling her “Mamacita” or adding cute emojis.

Their relationship is built on love, support, and humor. They seem like a team that truly enjoys being together — even after two decades of marriage.

Nathan Andersen Became a Father

Nathan Andersen is not only a husband, but also a proud father. He and A.J. Cook have two sons. Their first child, Mekhai Allan Andersen, was born in 2008. Their second son, Phoenix Sky Andersen, was born on July 23, 2015.

Both kids are super special to them. And here’s something fun — both boys actually appeared in A.J. Cook’s TV show Criminal Minds. Mekhai played Henry, and Phoenix played Michael, the children of her character on the show. It was a sweet family moment on-screen and off.

Nathan often shares little snapshots of his life as a dad. He once posted a funny photo of Phoenix washing the car and joked it was “child labor” in return for candy. He also shares pictures of them hiking, playing, and having fun together.

You can see how much Nathan loves being a dad. He seems very close to his sons and enjoys spending time with them — especially outdoors, where they can explore just like he did when he was young.

Nathan’s Battle with Cancer

In 2019, Nathan Andersen shared something very personal with the world. He had been fighting thyroid cancer. It was a tough journey, but he stayed strong and focused on healing.

Later that year, Nathan proudly announced he was cancer-free. He even posted a photo showing the scar on his neck. Many people commented on the post to support him. Some shared their own stories and said they had similar scars too.

A.J. Cook also shared a message full of love. She wrote, “Cancer picked the wrong guy to mess with. You won baby! You’re #cancerfree.” Her message showed how much she believed in him and how happy she was that he had won the fight.

Nathan didn’t post often during this time, but when he did, it was meaningful. His calm and quiet strength inspired many people who were also facing health challenges.

Nathan Andersen’s Net Worth

Nathan Andersen has worked hard for many years. He may not be in the movies like his wife, but he has built his own success. His main income comes from his clothing company, Walter Sky, which he runs with his brother.

As of now, his net worth is estimated to be around $4 million. This comes from his work as a fashion designer, entrepreneur, and also from his earlier startup experience. He has shown that with patience and smart choices, it’s possible to grow something meaningful.

Even with money and success, Nathan keeps things simple. He doesn’t show off or try to impress. He lives a clean, calm life focused on what matters: family, travel, and building a brand he believes in.

Final Thoughts

Nathan Andersen may be known to many as “A.J. Cook’s husband,” but he is so much more than that. He is a creative thinker, a bold traveler, a loving dad, and a strong cancer survivor. He has built a brand that matches his way of living — strong, simple, and thoughtful.

His story is not about fame. It’s about following your own path, even when it takes time. From film class to fashion design, from startup work to outdoor adventures — Nathan has stayed true to who he is.

Whether he’s designing clothes, hiking with his kids, or sharing a quiet moment with A.J. Cook, Nathan Andersen lives life with purpose. And that’s what makes his story worth knowing.

(FAQs)

What does Nathan Andersen do for a living?

Nathan is a businessman and the co-founder of Walter Sky, a clothing brand that makes simple and high-quality clothes for people who love adventure and travel.