baby name TheodoreThe baby name Theodore belongs to a US president, a singing chipmunk, and more and more baby boys with every passing year.

Thanks to Katharine for suggesting our Baby Name of the Day.


Long before a chipmunk ever sang on television, the baby name Theodore was well-established.

In fact, it stretches back to pre-Christian times, making the animated rodent more of a footnote than a defining figure.

In Greek, the name started out as Theodoros. Theo refers to god; doron means gift – God’s gift. It became Theodorus in Latin. Dorothea and Dorothy are cousins, with the same elements reversed.

The name was in heavy use in the ancient world, worn by a pioneering sixth century BC architect and a fourth century BC mathematician.

The first saint appears around the 400s AD. There’s a seventh century Byzantine military leader. Add in a pair of popes and the rulers of Naples, Russia, Corsica, Ethiopia, Antioch, and Montferrat and this was a widely known name well before the nineteenth century.

No surprise that it appears in nearly every European language, with variations from the Italian Teodoro to the Russian Fyodor and beyond.


But in English, the baby name Theodore failed to catch on. It wasn’t popular until the 1800s, when those creative Victorians finally discovered Theodore.

The name features in Louisa May Alcott’s Little Women series. Love interest “Laurie” is actually Theodore Laurence. He marries Amy March. Older sister Jo later names one of her sons Theodore, called Teddy, after her brother-in-law. Published in 1886, Little Women sequel Jo’s Boys focused on the lives of several next generation family members, including Teddy.

Nineteenth and early twentieth century notables by the name include:

  • Impressionist painter Theodore Robinson and early French Romantic painter Théodore Géricault lend the name some artistic flair. So does Prussian-born illustrator Theodore Jasper, known for his renderings of birds.
  • Writers like novelist Theodore Dreiser and American poet Theodore Roethke remain widely read today.
  • The 26th president of the United States, Theodore Roosevelt – popularly known as Teddy – is one of the more readily recognized figures in American history.

US popularity data begins in 1880. The baby name Theodore sits solidly in the Top 100 – and rising – in those early years. In fact, it was President Roosevelt’s 1901 swearing in that catapulted the name into the Top 50 during his tenure in office.

The name reached peak popularity during the first decade of the 1900s, peaking at #30 in 1904. It remained in the US Top 100 into the 1940s.


Born in 1904, Theodor Seuss Geisel was one of those peak-Theodore babies.

But the children’s author is best known by his pen name, Dr. Seuss.

While his work also included political cartoons and animation work for for the United States Army during World War II, Seuss devoted the bulk of his career to playful, thoughtful children’s books, writing and illustrating enduring favorites. Titles include 1957’s The Cat in the Hat, 1957’s How the Grinch Stole Christmas, and 1971’s The Lorax. 


By the time Ross Bagdasarian recorded his novelty Christmas song in 1958, creating the trio of singing chipmunks, Theodore was on its way out.

All three chipmunks were named for executives at Bagdasarian’s record label – which tracks, because those executives were probably born during the name’s earlier run of popularity.

By 1959, the sweater-wearing trio were appearing in a comic strip. And by 1961, they had their first television show.

They’ve been updated and revised over the years, changing and adapting to try new musical styles and cinematic adventures.

As the adopted sons of their father/manager Dave, Alvin, Simon, and yes, Theodore Seville, all came with names that were firmly out of favor in the late 1950s and early 60s.

So they were quirky choices, a little offbeat. The names were every bit as surprising as singing rodents.


As the baby name Theodore fell in the rankings, many Theodores answered to the nickname Ted.

Baseball Hall of Famer Ted Willams was born Theodore. The same is true for controversial guitarist Ted Nugent and former Alaska senator Ted Stevens.

Teddy feels both older and fresher. The former president is often called Teddy Roosevelt by the public, though he personally disliked the nickname, preferring to be called Colonel or T.R.

He wasn’t the only one. Television actor Teddy Wilson appeared on 1970s staples like Good Times.

Now Teddy fits with cuddly nickname names like Charlie.

But Teddy isn’t necessarily the go-to nickname today. That distinction belongs to Theo.

It fits with trends today. We love names ending with O, and it’s easy to understand Theo catching on with Leo so in favor.

The numbers back this up, too. As of 2021, Theo ranked #142 as an independent name – the highest chart position by far.


Bill Cosby was a well-established comedian and television actor, beginning in the 1960s.

But he became a household institution after creating The Cosby Show, earning the title “America’s Dad.” The series, which rank from 1984 until 1992, focused on the Huxtable family. Dad Cliff – played by Bill – was obstetrician married to successful attorney Clair. The pair raised their five children in a picture-perfect Brooklyn brownstone.

Today it’s hard to think about the show without considering the later revelations about Cosby. But back in the 1980s, The Cosby Show was the dominant television sitcom, an inescapable part of American culture. It was wholesome, serious, funny, fashionable, and focused on an upper-middle class African-American family, something that hadn’t really been part of television before.

The couple’s five children included adorable youngest daughter Rudy, breakout star and second daughter Denise, and only son, Theo.

Sharp-eyed television fans might know that Theodore belonged to another famous sitcom character – 1950s Theodore “Beaver” Cleaver, the young star of Leave It To Beaver. While the show ran from 1957 through 1963, it reached a new generation on re-runs in the 1980s.

Which brings us right back to the middle Cosby son.

Theodore Aloysius Huxtable was played by Malcolm-Jamal Warmer. When the character debuted in 1984, the baby name Theodore ranked #213.

By the time the series ended, in 1992, Theodore had slid to a chilly #260.

Despite the show’s runaway success, the name – and nickname Theo – continued to fall out of favor.


Theodore stood at a respectable, but frosty, #313 in 2004. It marked the name’s least popular moment.

It wasn’t that the name was unknown. Not at all!

In 2006, blockbuster family comedy Night at the Museum would feature Robin Williams as a wax statue of President Theodore Roosevelt himself, come to life, in Night at the Museum. And the generation naming children had grown up with Theo Huxtable.

The baby name Theodore rose in use for other reasons. Part of it was the appeal of o-ending nickname Theo. Some is attributable to our love for longer, popular boy names. Oliver and Sebastian, Alexander and Benjamin all succeeded in the early 2000s.

In the following two decades, characters named Theodore would appear in popular culture. Fiction gave us John Grisham’s adolescent aspiring lawyer, Theodore Boone. Television introduced figures like The Walking Dead’s T-Dog. One of the more influential figures might have been Prison Break’s Theodore Bagwell, played by Robert Knepper. While he was a villain, he quickly became a major part of the successful series, following its 2005 debut.

The name started to rise, breaking into the Top 200 in 2012, and the Top 100 in 2015.

By 2021, the baby name Theodore soared into the US Top Ten for the first time ever, ranking #10.


All of this makes the baby name Theodore the ultimate comeback classic.

From ancient days to more recent American history, notable Theodores are plentiful. And yet, today it feels just a little different from an earlier generation’s Davids and Daniels, an old school choice. Factor in the oh-so-current nicknames Theo and Teddy, and it’s easy to see why parents are wild about this traditional, on-trend name.

What do you think of the baby name Theodore? 

This post was published originally on October 24, 2008. It was substantially revised and re-posted on November 4, 2013; August 15, 2018; and again on December 21, 2022.

baby name Theodore baby name Theodore

About Abby Sandel

Whether you're naming a baby, or just all about names, you've come to the right place! Appellation Mountain is a haven for lovers of obscure gems and enduring classics alike.

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What do you think?


  1. Our son is Theodore but daily and at school he’s Teddy. It’s a hit on the playground as all the kids love his name. I figure he’ll demand to be called Theo in high school. I like the historic aspect of the name and that it can be quite strong and formal but with wonderful diminutives. I am a bit annoyed at the amount of Theodores I am now seeing though- it shot way up in popularity after we chose it. Ah well, a classic for a reason. I love my Teddy. His sister is Isadora, Izzy on a daily basis.

  2. What are your thoughts on the upcoming Theodore, “Ted,” Bundy movie starring Zac Efron? Will it affect this name? It is going to be a wide theatrical release this upcoming Autumn. thanks!

  3. I love this name. A friend of mine told me not to use it because of an upcoming movie . Currently, there is going to be a block buster style release on the big screen about Theodore “Ted” Bundy starring Zac Efron. What are your thoughts on this negative connotation with this name ? How influential can a movie Be?

    1. A movie can be wildly influential. Just look at Logan, a name pushed into the US Top Ten after it featured in two blockbusters in the space of a year.


      – Theodore is a classic name. It’s tough to argue that any one Theodore – no matter how wonderful or vile – could permanently change how we see it. The same is true for James, David, Charles, etc.

      – The title of the movie is not Theodore Bundy. Or even Ted Bundy. It’s titled “Extremely Wicked, Shockingly Evil, and Vile.” So a casual observer won’t necessarily hear Theodore in connection with the film.

      – Ted Bundy is infamous … but as Ted Bundy. Not as Theodore. It’s pretty clear that the movie calls him Ted.

      – There’s no guarantee that the movie will be a hit. It has lots of buzz now, but I often track movies for their impact on names – only to have the film fizzle. Netflix feels a little different to me … but I’m not sure if that makes it more or less influential. In general, television tends to be more influential because more people see something over a longer period of time.

      – And lastly, effectively what this person is saying is “Don’t name your child Theodore because Ted Bundy.” But Bundy isn’t new. He was executed in 1989. Seven movies have been made, the earliest in 1986, plus at least four television specials and three books. If there was going to be lasting, irreparable negative damage to the name, it would already be done. Instead, the name has climbed in recent years, re-entering the U Top 100.

      So … yes, a movie can be huge. But this won’t be an issue for Theodore, for lots of reasons.

  4. Love the name Theodore, however, I also like the Hungarian version Tivadar (TEEV-aw-dahr), it’s so unique.