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Thaddius

Gender
Boy
Say it
THAD-ee-us
Origin
Aramaic

Thaddius is a boys' name of Aramaic origin. Too few babies were given it in the latest year to rank.

What does Thaddius mean?

Aramaic: variant of Thaddeus, via Greek

Variant of Thaddeus, the Greek form of an Aramaic name borne by one of Jesus's twelve apostles.

Is Thaddius a girl's or a boy's name?

Thaddius is a boys' name.

How popular is Thaddius in the US?

No boys in the US were given it in 2025, or too few to be listed. Its busiest year was 1989, with 18 boys. It first appears in the records in 1916.

Half of all the boys named Thaddius in the US since 1880 were born between 1973 and 2002, the years shaded on the chart below.

1916Busiest: 18 in 19892023
Thaddius in the US, year by year
YearBoysRank
20235#12,232
20220–
20216#10,794
20207#9,548
20190–
20180–
20177#9,691
20165#12,180
20150–
20148#8,775
201310#7,532
201210#7,553
20118#8,760
201010#7,585
20098#8,980
200810#7,693
20078#8,909
200611#6,899
20057#9,108
200411#6,514
20036#9,574
200212#5,718
200112#5,660
20007#8,202
199910#6,036
19987#7,553
19979#6,094
19966#7,964
199510#5,495
199414#4,284
199312#4,690
19928#6,120
199114#3,998
199015#3,773
198918#3,199
19887#5,745
198711#3,954
198617#2,888
198515#3,067
198412#3,457
198310#3,882
198212#3,481
19817#4,959
19807#4,938
19799#4,066
197811#3,399
19777#4,580
19769#3,722
19758#3,939
19746#4,632
197317#2,309
197217#2,243
197113#2,685
197015#2,398
19698#3,313
19688#3,106
19677#3,229
19666#3,535
19650–
19646#3,600
19630–
19620–
19610–
19600–
19590–
19580–
19570–
19569#2,796
19558#2,962
19546#3,450
19530–
19520–
19510–
19500–
19490–
19480–
19470–
19465#3,523
19450–
19447#2,861
19430–
19420–
19410–
19400–
19390–
19385#3,533
19370–
19360–
19350–
19340–
19330–
19320–
19310–
19300–
19290–
19280–
19270–
19260–
19250–
19240–
19230–
19225#4,305
19210–
19200–
19190–
19180–
19177#3,216
19165#3,896

Nicknames for Thaddius

Names like Thaddius

Names given in the same years and the same naming tradition, with a similar sound.

Names related to Thaddius

More Aramaic names

Every Aramaic name

Sources

Figures from Popular Baby Names (US Social Security Administration). Nameling last updated them on 20 October 2026. How the figures are worked out, and the data to download.

To cite this page: Nameling, “Thaddius: name meaning, origin and popularity”, https://www.nameling.co.uk/names/thaddius, updated 20 October 2026.