Meaning Keir is a Celtic name for a girl, it means dark-haired and dark-skinned girl. Origin of Keir Celtic , Irish +-100%Zoom level changed to 1 Popular Middle Names Justus Pronunciation 🔊 Listen Keir Similar Names Keira Kiara Kierra Brieonna Keaira Kyllikki Keriam Maurina Sauda Duann Year by Year Popularity of Keir