| Box Width: | 25em |
| T1 Karşıyaka Tram | |
| Color: | 63A14D |
| Type: | Light-rail |
| System: | Tram İzmir |
| Status: | Operating |
| Locale: | İzmir, Turkey |
| Start: | Alaybey (Karşıyaka) Mavişehir (Karşıyaka) |
| End: | Ataşehir Kavşağı (Çiğli) Ataşehir (Çiğli) |
| Stations: | 15 |
| Routes: | 2 |
| Open: | |
| Owner: | İzmir Metropolitan Municipality |
| Operator: | İzmir Metro A.Ş. |
| Character: | Light rail with tram features |
| Depot: | Mavişehir |
| Stock: | 17 |
| Linelength Km: | 8.8 |
| Tracks: | 2 |
| Routenumber: | T1 |
| Electrification: | 750 V DC Overhead line (Overvolted to 875 volts) |
| Speed Km/H: | 60 |
| Elevation M: | 1 |
| Map State: | collapsed |
T1 Karşıyaka Tram (tr|T1 Karşıyaka Tramvayı) is a 8.8km (05.5miles) urban light rail transit (LRT) system in Karşıyaka and Çiğli districts of Izmir, Turkey and is one of the three lines of Tram İzmir.
Construction work on the tram line began in April 2015. Test drives began in January 2017 and the line entered service on 11 April 2017. The line, which will operate on the Alaybey – Ataşehir route until 27 January 2024, underwent changes in its route to integrate with the Çiğli Tram (T3), which entered service. The Alaybey – Ataşehir Kavşağı line was named the Green Line, and the Mavişehir – Ataşehir line was named the Orange Line. The number of stations on the line increased to 15.
The operating system of the tram line has two different lines. Green Line starts from Alaybey, Karşıyaka İskele, Nikah Sarayı, Yunuslar, Bostanlı İskele, Çarşı, Vilayet Evi, Selçuk Yaşar, Atakent, Bilim Müzesi, Mustafa Kemal Atatürk Spor Salonu, Mavişehir and reach Ataşehir Kavşağı station.
Orange Line starts from Mavişehir, passes through the Çevre Yolu and ends in Ataşehir.
The tram line is operated by İzmir Metro. The line is served by 17 tramcars produced by Hyundai Rotem plant in Adapazarı. The double-ended 32m (105feet)-long five-module tramcars are each 43.1 t heavy. They have 48 seating capacity, and can carry up to 285 passengers each. Service speed is 24km/h, and top speed is 70km/h. The tramcars run on standard track gauge at 1435mm. The electrification system of the tramcars is 750 V DC. The line has a communications-based train control (CBTC) signalling system.
The metropolitan mayor announced that the ride is free of charge for a duration of the first fifty days until the beginning of June 2017.