| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 81 | Baibre | Irish | Strange. | F | |
| 82 | Barran | Irish | Little top. | F | |
| 83 | Barrie | Irish | A form of Barry, from the Irish word for spear. This name is given more commonly to men, but also used as a feminine name. Also Fair-haired. Famous bearer: Sir J. M. Barrie created Peter Pan. | F | |
| 84 | Bebhinn | Irish | Singer. | F | |
| 85 | Bedelia | Irish | A variant of Bridget, meaning the high one or strength. Famous bearer: 6th century Irish abbess Brigid )known as St Bridget or St Bride) founded Ireland's first women's religious community. | F | |
| 86 | Berneen | Irish | Feminine form of Bernard: courage of a bear. | F | |
| 87 | Bevin | Irish | Singer. | F | |
| 88 | Biddy | Irish | Diminutive of Brigid: A variant of Bridget, meaning the high one or strength. Famous bearer: 6th century Irish abbess Brigid )known as St Bridget or St Bride) founded Ireland's first women's religious community. | F | |
| 89 | Bidelia | Irish | Protective. | F | |
| 90 | Bidina | Irish | Protective. | F | |
| 91 | Birgitta | Irish | A variant of Bridget, meaning the high one or strength. Famous bearer: 6th century Irish abbess Brigid )known as St Bridget or St Bride) founded Ireland's first women's religious community. | F | |
| 92 | Blathnaid | Irish | Flower. | F | |
| 93 | Bluinse | Irish | White. | F | |
| 94 | Blyana | Irish | Strong. | F | |
| 95 | Brann | Irish | Raven. | F | |
| 96 | Brea | Irish | Hill. Also variant of Brina and Breanna. | F | |
| 97 | Breandan | Irish | Little raven. | F | |
| 98 | Breanne | Irish | Strong. | F | |
| 99 | Breck | Irish | Freckled. | F | |
| 100 | Bree | Irish | Hill. Also abbreviation of Brina and Breanna. | F | |