-demir

The name Özdemir was in use before the Surname Law. It occurs as a personal name in the Ottoman period. It therefore cannot be treated as a 1934 coinage. Today it is one of the most common surnames in Türkiye: TÜİK ADNKS 2025 places it 10th, with 556,378 people. The bare surname Demir stands 3rd in the same list, with 876,934.

The word itself is old. Old Turkic has it as temür, and modern demir grew out of that form through regular sound change. The personal name Timur goes back to the same word. Its meaning is the metal ‘iron’. Figuratively it means ‘firm, durable, unshakeable’.

In these surnames -demir is not a suffix but the second word of a compound. Being a full word, it does not change under vowel harmony. Whether the first element has back or front vowels, demir stays the same: Karademir, Gökdemir, Kocademir. No linking sound is added, and the two parts are written as one.

The meaning rests on the last element, and the first element describes the iron. Özdemir means ‘pure, genuine iron’. In Aydemir, ay adds the sense ‘radiant, fine’ that the word often has in names. Karademir reads as ‘black iron’, Akdemir as ‘white iron’; the colours also suggest qualities such as strength and cleanness. Gökdemir means ‘sky iron’ or ‘blue iron’. Taşdemir sets two words for hardness side by side: stone and iron. In Kocademir, koca means ‘big, mighty’.

This page collects the names in which iron comes last. Surnames that begin with it, such as Demirtaş or Demirel, are treated on a separate page under the element Demir-.

The risk of confusion is low, but one name needs care. Erdemir divides as er + demir, ‘valiant iron’. It has nothing to do with erdem ‘virtue’; Erdemir is not Erdem with an ending. Demirci and Demircioğlu are derivatives, not compounds. In them iron comes first and is followed by the occupational suffix -ci.