James Ainslie was a Scottish pastoralist, best known as the first overseer of the property known as Duntroon in the Australian Capital Territory, he increased the size of the property's sheep flock from 700 to 20,000 in 12 years. He lived in a relationship with an Aboriginal woman and she bore him a daughter called 'Nanny'. Following his 10 years at Duntroon he returned to Scotland in 1835. His activities after this date are unknown.
The suburb Ainslie, originally a part of the property, is named in his honour as is Mount Ainslie.