| Elmadağ Bridge | |
| Native Name: | Elmadağ Köprüsü |
| Native Name Lang: | tr |
| Carries: | Ankara-Sivas high-speed railway |
| Crosses: | Kızılırmak |
| Official Name: | Viaduct 15 |
| Named For: | Elmadağ |
| Owner: | Turkish State Railways |
| Material: | Reinforced concrete |
| Number Spans: | 22 |
| Num Track: | 2 |
| Electrification: | 25 kV AC, 50 Hz OHLE |
| Builder: | Doğuş İnşaat |
| Begin: | 2014 |
| Open: | 26 April 2023 |
The Elmadağ Bridge (Turkish: Elmadağ Köprüsü), officially designated as Viaduct 15 (Turkish: Viyadükt 15) or V15, is a railway bridge near Kırıkkale, Turkey, on the Ankara-Sivas high-speed railway. With a total length of and consisting of 22 spans, the bridge crosses the Kızılırmak River as well as the Trans-Anatolian railway. Elmadağ Bridge is also the highest railway bridge in Turkey, standing tall.
The bridge is one of four viaducts between Kırıkkale and Elmadağ, with a total length of . It opened on 26 April 2023, along with the Ankara-Sivas high-speed railway.