Macallister is a traditional Scottish surname that originated from the Gaelic name MacAlasdair, meaning "son of Alasdair," which is a form of the name Alexander. It is a strong and distinguished name that has been passed down through generations in Scottish families. The name Macallister is often associated with qualities such as leadership, courage, and resilience. Individuals with this name are known to be determined and hardworking, with a strong sense of loyalty to their family and friends. Overall, Macallister is a name that carries a sense of pride and heritage.