The name Macallister is a boy's name of Scottish, Scottish Gaelic origin meaning "son of Alasdair". Macallister and is often added to lists like Mac Names and discussed in our forums with posts like "Drop your least favorite (boys)".
From the experts:
Macallister as a first name is attracting new attention as the name chosen by Yahoo CEO Marissa Mayer and venture capitalist Zack Bogue for their young son. Macallister is usually heard as a patronymic surname, meaning son of Alasdair or Alistair or any one of the spellings of the Scottish form of Alexander. Like all other names of this type, Macallister leads to the cute short form Mac.