Aleister

Gender: Boy
Origin: Scottish
US rank, 2025: #2,940 for boys

Aleister is a boys' name of Scottish origin, meaning “to defend”. In 2025 it ranked 2,940th for boys in the US (42 babies).

What does Aleister mean?

Scottish

“to defend”

A male given name from Scottish Gaelic, of rare usage, variant of Alastair.

From Wiktionary, CC BY-SA 4.0.

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

Aleister is a boys' name. In 2025, it was given to 42 boys in the US. Too few girls were given it to be listed.

How popular is Aleister in the US?

Rank in 2025: 2,940th among boys
Babies in 2025: 42 about 1 in 41,000 boys
Five-year trend: Falling down 31% in five years
Same name in a class: under 1% chance among 15 boys

In 2025, 42 boys in the US were named Aleister, making it the 2,940th most popular name for boys. Five years earlier, in 2020, it was 2,046th. Its busiest year was 2020, with 69 boys. It first appears in the records in 1997.

Half of all the boys named Aleister in the US since 1880 were born between 2014 and 2022, the years shaded on the chart below.

1997Busiest: 69 in 20202025

Aleister in the US, year by year

Year	Boys	Rank
2025	42	#2,940
2024	35	#3,333
2023	44	#2,847
2022	48	#2,715
2021	46	#2,731
2020	69	#2,046
2019	61	#2,264
2018	46	#2,673
2017	34	#3,310
2016	24	#4,198
2015	28	#3,774
2014	26	#3,888
2013	16	#5,400
2012	14	#5,995
2011	15	#5,670
2010	18	#5,044
2009	11	#7,231
2008	11	#7,182
2007	9	#8,169
2006	11	#6,899
2005	6	#10,144
2004	10	#6,970
2003	7	#8,636
2002	0	–
2001	7	#8,332
2000	9	#6,832
1999	0	–
1998	0	–
1997	6	#8,104