This incomplete list of tunnels in Turkey includes any road, rail, or waterway tunnel in Turkey. Tunnels are listed in decreasing order of their length. Road tunnels Rize (İkizdere) - Erzurum (İspir), Ovit Tunnel – 2 x 14,346 m Giresun, Dereli-Şebinkarahisar, Eğribel Tunnel – 2 x 5,910 m İstanbul, Eurasia Subsea Tunnel (subsea) – 2 x 5,400 m Çankırı (Ilgaz) - Kastamonu, Ilgaz Tunnel – 2 x 5,391 m Artvin, Hopa (Çavuşlu) - Borçka (Çifteköprü), T3 (3. Cankurtaran) Tunnel – 2 x 5,228 m Bayburt (Aydıntepe) - Gümüşhane - Trabzon (Araklı), Salmankaş (Şehit Hamit Şahin) Tunnel – 2 x 4,150 m İzmir-Manisa, Sabuncubeli Tunnel – 2 x 4,085 m Çanakkale, Ayvacık-Küçükkuyu, T2 (Troya) Tunnel – 2 x 4,017 m Ordu, Perşembe-Fatsa, Nefise Akçelik (Hapan/Hapağan) Tunnel – 2 x 3,825 m İstanbul, Çamlıca-Libadiye Tunnel – 2 x 3,690 m Ordu Ring Road, Boztepe Tunnel – 2 x 3,313 m Rize Ring Road, Salarha Tunnel – 2 x 2,977 m Kahramanmaraş-Göksun, Ahmet Eskalen (Göksun-T2) Tunnel – 2 x 2,895 m Trabzon, Maçka New Tunnel – 2 x 2,802 m Denizli, Honaz Tunnel – 2 x 2,640 m Kahramanmaraş-Göksun, Çağlayan Tunnel – 2 x 2,545 m Bilecik-Vezirhan, Osmangazi (Kocatepe) Tunnel – 2 x 2,474 m Trabzon, Coastal Highway, Akyazı (Yıldızlı) Tunnel – 2 x 2,472 m Malatya-Elazığ, Kömürhan Tunnel – 2 x 2,400 m İstanbul, Dolmabahçe-Bomonti Tunnel – 2 x 2,390 m Bartın, Çakraz-Kurucaşile, Dizlermezeci (T3) Tunnel – 2 x 2,350 m Van (Gevaş) - Bitlis (Tatvan), Kuskunkıran (Kuzgunkıran) Tunnel – 2 x 2,306 m (2nd tube projected) Van, Bahçesaray-Çatak, Karabet Snow Tunnel – 1 x 2,300 m Artvin-Yusufeli, Oruçlu Ripage Tunnel – 1 x 2,277 m Erzurum(Uzundere)-Artvin(Yusufeli), Pirinkayalar (Lake Tortum) Tunnel – 1 x 2,272 m Giresun-Tirebolu, Tirebolu Volunteer 42nd Regiment Tunnels, Tirebolu Variant-1 (T1) Tunnel – 2 x 2,175 m Ankara (Kızılcahamam) – Çankırı (Çerkeş) Tunnel – 1 x 2,071 m Ordu Ring Road, Öceli Tunnel – 2 x 2,034 m İstanbul, Sarıyer-Çayırbaşı Tunnel – 2 x 2,025 m Sinop-Boyabat, Ahmet Muhip Dıranas Tunnel – 1 x 2,016 m Ordu, Ünye Bypass Road, Yunus Emre (Saca) Tunnel – 2 x 1,996 m Bitlis Bypass Road, T1 (8 August/Bitlis) Tunnel – 2 x 1,947 m Bartın, Çakraz-Kurucaşile, Çakraz (T1) Tunnel – 2 x 1,936 m Ordu, Mesudiye (Pınarlı-Topçam), T2 (Topçam) Tunnel – 1 x 1,920 m Trabzon, Araklı-Arsin, Araklı (Konakönü) Tunnel – 2 x 1,906 m Giresun (Doğankent) - Gümüşhane (Kürtün), Güvenlik