| Afton Water | W. afon G. abhain ‘water, river’ |
| Ail-, Al- | G. ail, al ‘rock of -‘ |
| Alhang hill | G. al ‘rock of ?’ |
| Alwhat hill | G. al chat ‘rock of the wild cat’ |
| Ashmark | S. esche mark ‘ash-tree merk-land’ |
Auch-, Auchen-, Auchin-
| G. achadh na ‘field of the –‘ |
| Auchincally hill | G. achadh calltuin ‘hill of ‘the field of the hazel’ |
| Auchincross, Hall of Auchincross | G. achadh croisg ‘field of the crossing over the ridge’ |
| Auchingee | G. achadh geadh ‘field of the goose’ |
| Auchintow hill | G. achadh toll ‘field of the hollow’ |
| Auchtitench lane | G. ochdamh ? ‘an eighth ?’ |
| Auldnaw Glen | G. allt atha ‘glen of the kiln’ |
