MallowbyNames

Thomas

TAH-mus · From Aramaic taʾoma, "twin," the byname of the apostle whom the Gospels also call Didymus.

2025 rank (boys)
#34
Babies named in 2025
6,917
Peak popularity
1951
2025 frequency
1 in 247 boys
Usually for
Boys
Trend
Declining since 1987

Declining since 1987, #34 for boys today.

Popularity of Thomas since 1880

Babies named Thomas per year in U.S. Social Security records.

16.2k32.4k48.6k1880192019602000Most births 1952Boys
Data table (by decade)
DecadeBoys
1880s23,750
1890s21,115
1900s21,783
1910s91,619
1920s161,107
1930s183,878
1940s350,775
1950s454,385
1960s327,055
1970s186,739
1980s177,817
1990s146,638
2000s102,106
2010s70,027
2020s39,782

Meaning & origin

Thomas has been a common English-speaking name for over eight hundred years, so its American chart position moves the way glaciers do. The Social Security peak came in 1951, at the height of the midcentury classics era; the descent since 1987 has been so gradual that in 2025 the name still ranks 34th, reaching about one boy in 247.

Its current strongholds, Vermont, Wyoming, and the District of Columbia, sketch an odd coalition of old New England, the rural West, and the capital, which is roughly what a name looks like when it belongs to no region in particular. Thomas simply persists everywhere, sustained by family trees in which a Thomas appears every second or third generation.

That is the real case for it now: the name is an infrastructure classic, like William or Henry, with a bearer list running from Becket to Jefferson to Edison. Parents who choose it are not betting on a trend in either direction, seventy-plus years past its peak, Thomas is about as fashion-proof as American naming gets.

The apostle Thomas bore an Aramaic byname meaning "twin", the Gospel of John also calls him Didymus, Greek for the same thing, and Thōmas is its Greek spelling. The Normans brought the name to England, where the 1170 martyrdom of Archbishop Thomas Becket made it one of the two or three commonest men's names of the English Middle Ages, a status it held for centuries. American history is thick with bearers, Jefferson and Edison foremost. In Social Security data Thomas peaked in 1951, when it sat near the top of the national charts, and has eased downward since 1987 without ever approaching obscurity.

Read more: Thomas on Wikipedia

Where Thomas is most popular

Births per 100,000 boys by state. Press play or drag the slider to watch it move across the decades. The lightest shade means too few recorded births.

2020s
Fewermore per 100k boystoo few births

Thomas” around the world

Where Thomas lands in the latest official birth statistics abroad, matched to the U.S. spelling.

  • France

    455

    babies in 2024

  • Ireland

    #16

    in 2025

  • New Zealand

    #27

    in 2025

  • Quebec

    #8

    in 2025

  • Australia (NSW)

    #13

    in 2025

Sources: INSEE (France) · CSO Ireland (Ireland) · NZ Dept of Internal Affairs (New Zealand) · Retraite Québec (Quebec) · NSW Registry of BDM (Australia (NSW)).

Nicknames & variants

Nicknames: Tom, Tommy

Variants: Tomas, Tommaso, Tomasz, Tuomas

Famous people named Thomas

  • Thomas Becket · twelfth-century Archbishop of Canterbury and martyr
  • Thomas Jefferson · principal author of the Declaration of Independence and third U.S. president
  • Thomas Edison · inventor of the phonograph and practical electric light

Sibling names for Thomas

Names that share Thomas's style, for a brother or sister.

Sisters: Margaret, Eleanor, Catherine, Jane, Alice, Ann, Anna, Callie, Caroline, Clare, Ellen, Harriet, Joanne, Katherine, Laura, Marian, Martha, Mary, Maryann, Robin, Tessa, Theresa, Aileen, Annamarie, Annemarie, Carlyn, Carole, Cathryn, Charity, Johanna, Justina, Katheryn, Kathrine, Kathryne, Katie, Lizabeth, Madeleine, Margarette, Mariann, Maribeth, Maryanne, Nanci, Rhoda, Robbin, Roseann, Roseanna, Rosemarie, Tamra, Ammy, Annice, Beckie, Betsey, Bettyann, Cate, Catheryn, Darcey, Delories, Elinore, Elizbeth, Female, Francene, Georgiann, Georgianne, Ileen, Joannie, Johannah, Johna, Katharyn, Katheryne, Kathyrn, Lisabeth, Magdalen, Magdaline, Marijo, Marye, Marykate, Maryland, Nicol, Norene, Rozanne, Suzann, Tereasa, Terresa, Thomasine, Thresa, Anmarie, Annamay, Annarose, Betzy, Bridgitte, Catherin, Chari, Cicily, Donnamarie, Eilleen, Ellamarie, Ellenor, Faithe, Faythe, Georgeanne, Girl, Jannett, Joane, Joesphine, Jone, Josepha, Lisanne, Magalene, Maggi, Mame, Mariellen, Maryclaire, Maryhelen, Marykathryn, Meribeth, Robina, Rosary, Salley, Sallyann, Sophy, Threasa, Tresea, Trishia, Alizon, Annet, Donne, Emmajane, Georgeann, Jannetta, Josphine, Judyann, Jullie, Kathalene, Kathlean, Kathline, Kathrin, Margaretmary, Marrianne, Marykatherine, Marymargaret, Marynell, Michaelene, Morene, Roann, Rozanna, Ruthell, Saraann, Sarajane, Tamla, Teresea, Teresia, Tersa, Thomasa, Thomasene, Christee, Hanne, Anniebell, Athleen, Carolan, Dorice, Elizebath, Elleen, Ellinore, Eustacia, Francys, Jennet, Katheren, Kathreen, Kitti, Laurey, Lizbett, Magdelene, Maripat, Marypat, Suzzane, Thersea

Brothers: William, Henry, James, George, Charles, Andrew, John, Joseph, Robert, Joan, Johnnie, Laurence, Peter, Phillip, Simon, Davy, Hamilton, Harris, Little, Pete, Robb, Zebedee, Douglass, Geoff, Henery, Junious, Lawrance, Mathieu, Matthews, Rich, Sumner, Wiliam, Willem, Wm, Zacchaeus, Andrews, Charls, Domnick, Fleming, Harrie, Hillery, Jessey, Jonn, Judas, Keene, Kennieth, Kennis, Loretto, Martyn, Mathews, Michiel, Nichols, Purcell, Richrd, Roberts, Rodgers, Simpson, Stefen, Thimothy, Timothey, Watt, Geffrey, Jenkins, Jeorge, Johannes, Johnjoseph, Johnpatrick, Larwence, Piers, Ricahrd, Richad, Richar, Richerd, Robertson, Stephenson, Tarance, Willim, Bunyan, Davidlee, Geoge, Harvy, Jamas, Richards, Roberth, Thijs

Names like Thomas

Names whose popularity has moved with Thomas's over the last 50 years.

A parent animal hugging its little one, the personalized name page

T is for Thomas, our favorite little boy.

T is for Thomas…”

In a Mallowby alphabet book, Thomas's letter becomes Thomas's page: hand-illustrated, printed hardcover or paperback, made just for them.

Make Thomas's book

Books for siblings or grandkids? The second book is 15% off.

Questions parents ask

What does Thomas mean?
Thomas means "twin," from an Aramaic byname of the apostle; the Gospels translate it directly with the Greek Didymus. Few major names have an etymology this cleanly attested.
How popular is Thomas?
Thomas ranked 34th among American boys in 2025, given to about one boy in 247. Its peak came back in 1951, and it has drifted down slowly since 1987, but it has never come close to leaving the top tier.
Is Thomas too common?
Not anymore. A midcentury classroom might have held three Toms; at today's rank of 34 the name is familiar to everyone but carried by few, which is roughly the sweet spot parents ask for from a classic.
What are nicknames for Thomas?
Tom and Tommy have served for eight centuries, and many families now keep the full Thomas throughout. All three read as complete, unfussy names.