Namesakes
Alexander II
(a.k.a. Alasdair) (m) 1198-1249 
Scottish Kings and Queens 1214-1249
Alexander III
(a.k.a. Alasdair) (m) 1241-1286
Scottish Kings and Queens 1249-1286
Alexander I the Fierce
(a.k.a. Alasdair) (m) 1078-1124
Scottish Kings and Queens 1107-1124
Alasdair Strokosch
(m) 1983-
Notable Athletes (rugby)
Alasdair Evans
(m) 1989-
Notable Athletes (cricket)