King in Swahili is mfalme. In Kenyan Swahili, that is the standard word you’d use for “king.”

Quick note

  • mfalme = king
  • If you meant queen , that is malkia.

If you want, I can also give you:

  • the pronunciation,
  • a few example sentences, or
  • common Swahili royal words like “queen,” “prince,” and “crown.”