A person who moves from one place to another is called a migrant.

Additional related terms:

• Traveler : Someone who journeys from one place to another, often temporarily.
• Immigrant : A person who moves into a new country to live permanently.
• Emigrant : A person who leaves their own country to live in another.
• Nomad : A person who moves frequently from place to place, often without a permanent home.

If you want a specific term depending on the context, feel free to ask!