| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 21 | Ainslie | English | Derived from the Brittish Nottinghamshire place name of Annesley. From Ann's meadow. From the awe inspiring one's meadow. | F | |
| 22 | Aisley | English | From the ash tree grove. | F | |
| 23 | Alarice | English | Rules all. Feminine of Alaric. | F | |
| 24 | Alberta | English | Feminine form of Albert from the Old German Adalbert meaning noble and bright. The Canadian province Alberta was named for Queen Victoria and prince Albert's daughter Princess Louise Alberta, who was married to a former Canadian Governor General. | F | |
| 25 | Alberteen | English | Noble. | F | |
| 26 | Albertina | English | Feminine form of Albert from the Old German Adalbert meaning noble and bright. Albert became popular in England after Queen Victoria married Prince Albert in 1840. Noble, bright. | F | |
| 27 | Albertine | English | Feminine form of Albert from the Old German Adalbert meaning noble and bright. Albert became popular in England after Queen Victoria married Prince Albert in 1840. | F | |
| 28 | Albertyna | English | Noble. | F | |
| 29 | Albertyne | English | Noble. | F | |
| 30 | Albina | English | A feminine form of Albin, borne by a 3rd-century saint. The name was popular in Britain in the 17th and 18th centuries. | F | |
| 31 | Albreda | English | Introduced into Britain during the Norman Conquest, from an Old German name meaning elf counsel Was originally used for both sexes, but is now regarded as a feminine name. | F | |
| 32 | Aldercy | English | Chief. | F | |
| 33 | Aldis | English | From the old house. | F | |
| 34 | Aldora | English | Noble. | F | |
| 35 | Aldreda | English | Feminine form of Aldred: From the Old English Ealdraed, meaning old counsel. Aldred was common before the Norman Conquest, and revived in the 19th century. Wise or red haired man. | F | |
| 36 | Aldys | English | From the old house. | F | |
| 37 | Aleda | English | Winged. | F | |
| 38 | Aleta | English | Winged. | F | |
| 39 | Alexa | English | Helper, defender. variant of Alexander. | F | |
| 40 | Alexandra | English | Feminine of Alexander. Defender of mankind. | F | |