Fiona Craig (フィオナ・クレイグ Fiiona Kureigu) is Elliot Craig's older sister in the Trails of Cold Steel trilogy.
She is described to be a very beautiful and elegant woman. Machias Regnitz is shown to be attracted to her.
She is a very jolly person. She cares a lot for her brother and is overly attached to him, to an extent that surprises all of his brother's classmates.