Erivan Fortress, Ottoman fortress in Yerevan, Armenia

Erivan Fortress was a rectangular fortification in Yerevan, Armenia, with three main gateways named Tabriz, Shirvan, and Korpu. Each gateway was protected by double-line battlements and iron gates that controlled access to the interior.

The fortress was built in 1582–83 under Ottoman rule by Serdar Ferhat Pasha, who used stones from demolished churches and graves; a 45-day construction. A 1679 earthquake reduced it to ruins, and the Safavid governor Zal Khan rebuilt it with Shah's aid and forced labour from Ganja, Agulis and Dasht. It passed between Ottomans and Persians, taken by the Ottomans in 1724 and retaken by Persia in 1735. Russian troops under Ivan Paskevich captured it on 1 October 1827.

The Sardar Palace inside the fortress was built in a Persian style, with glass ornaments that caught and scattered the light across its rooms. Its Hall of Mirrors, with painted ceilings, was considered one of the finest interiors in the region at the time.

The fortress once stood near what is now Republic Square, but very little remains visible on the ground today. Nearby museums and guided city tours are the best way to get a clear picture of what the site once looked like.

Two mosques stood inside the fortress walls: the Rajab-Pasha Mosque, built in 1725, and the Abbas Mirza Mosque. After the Russian takeover, the Rajab-Pasha Mosque was converted into a Russian Orthodox church, showing how quickly the site changed after 1827.