Nameling

Merlyn

Gender
Mostly girls
Say it
MER-lin
Origin
Welsh
US rank, 2025
#11,928 for girls

Merlyn is a name of Welsh origin, meaning “sea fortress”. In 2025 it ranked 11,928th for girls in the US (7 babies).

What does Merlyn mean?

Welsh: variant of Merlin, from Welsh Myrddin

“sea fortress”

Merlin is the wizard of Arthurian legend, adviser to King Arthur.

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

In recent years, Merlyn has been given to girls and boys, mostly girls. In 2025, it was given to 7 girls and 6 boys in the US.

How popular is Merlyn in the US?

Rank in 2025
#11,928among girls
Babies in 2025
7about 1 in 230,000 girls
Five-year trend
Too rare to calltoo few babies to tell
Same name in a class
under 1%chance among 15 girls

In 2025, 7 girls in the US were named Merlyn, making it the 11,928th most popular name for girls. Five years earlier, in 2020, it was 8,401st. Its busiest year was 1925, with 41 girls. It first appears in the records in 1912. 6 boys were also named Merlyn in 2025 (10,690th for boys).

Half of all the girls named Merlyn in the US since 1880 were born between 1931 and 1992, the years shaded on the chart below.

In 1959, 31% of the babies named Merlyn in the US were girls.

1912Busiest: 41 in 19252025
Merlyn in the US, year by year
YearGirlsRank
20257#11,928
20245#15,288
202312#8,481
202211#9,050
202110#9,557
202012#8,401
201910#9,730
20189#10,540
20179#10,685
20168#11,776
201512#8,926
20149#10,949
20135#16,542
20128#12,193
201115#7,779
201015#7,877
200916#7,676
200823#5,952
200718#7,088
200615#7,865
200516#7,133
200416#7,072
200319#6,050
200210#9,476
200110#9,344
200013#7,574
199910#8,798
199817#5,794
199714#6,478
19966#11,801
199512#7,036
199414#6,313
199314#6,257
199212#7,060
19917#10,263
19907#10,187
19899#8,031
198813#5,890
19875#11,320
19866#9,540
19858#7,560
19849#6,808
19830–
19820–
19818#7,407
19800–
19796#9,008
19780–
19775#9,650
19765#9,282
19750–
19740–
19736#7,433
19720–
19715#8,322
19706#7,069
19690–
19687#5,641
19675#6,803
19665#6,563
19658#4,830
19645#6,766
19638#4,895
196210#4,262
19617#5,308
196011#3,919
195911#3,826
195811#3,746
195717#2,822
19569#4,160
195517#2,724
195417#2,694
195314#2,920
195213#3,039
195115#2,693
195015#2,651
194922#2,068
194821#2,125
194723#2,044
194617#2,317
194523#1,742
194427#1,577
194325#1,702
194227#1,591
194125#1,569
194025#1,549
193929#1,378
193823#1,596
193729#1,355
193638#1,150
193536#1,182
193433#1,236
193333#1,244
193228#1,421
193126#1,458
193022#1,702
192925#1,554
192835#1,289
192740#1,233
192631#1,448
192541#1,210
192425#1,723
192336#1,305
192221#1,897
192125#1,723
192015#2,357
191910#3,003
191814#2,375
191710#2,878
191615#2,133
191514#2,142
19149#2,433
19137#2,538
19128#2,143

Names like Merlyn

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

Names related to Merlyn

More Welsh names

Every Welsh 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, “Merlyn: name meaning, origin and popularity”, https://www.nameling.co.uk/names/merlyn, updated 20 October 2026.