| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 41 | Arregaithel | Scottish | From the land of the Gauls. | M | |
| 42 | Artair | Scottish | Bear. | M | |
| 43 | Arthur | Scottish | Derived from Celtic artos meaning 'bear'. | M | |
| 44 | Athdar | Scottish | From the oak tree ford. | M | |
| 45 | Athol | Scottish | From a surname based on the Scottish place name Atholl, used occasionally as a first name since the late 19th century. | M | |
| 46 | Aulay | Scottish | Ancestor; forefather. A variant of Olaf which derives from the Scottish Gaelic Amhblaibh. | M | |
| 47 | Bac | Scottish | Bank. | M | |
| 48 | Baen | Scottish | Fair skinned. | M | |
| 49 | Baigh | Scottish | From the upper part. | M | |
| 50 | BaIloch | Scottish | From the pasture. | M | |
| 51 | Baird | Scottish | From Baird. | M | |
| 52 | Baldie | Scottish | Diminutive of Archibald: True and bold. Also 'bald'. Introduced from England and Germany during the Norman conquest, the Scottish interpreted the 'bald' to refer to the shaven head of a monk. | M | |
| 53 | Balfour | Scottish | From the pastureland. | M | |
| 54 | Balgair | Scottish | Fox. | M | |
| 55 | Balgaire | Scottish | Fox. | M | |
| 56 | Balmoral | Scottish | From the majestic village. | M | |
| 57 | Banner | Scottish | Flag; ensign bearer. | M | |
| 58 | Barclay | Scottish | The Scottish spelling of the English surname Barkeley, meaning birch-wood or the birch tree meadow. | M | |
| 59 | Barday | Scottish | From Berkeley. | M | |
| 60 | Bartley | Scottish | The birch tree meadow. See also Berkley. | M | |