Ali bey Huseyn oghlu Huseynzade (Azerbaijani: Əli bəy Hüseyn oğlu Hüseynzadə; Turkish: Hüseyinzade Ali Turan; Salyan, March 7, 1864 – Istanbul, March 17, 1940) was an Azerbaijani writer, thinker, philosopher, artist, doctor, and the creator of the modern Flag of Azerbaijan.

[1] Ali bey Huseynzade was born in 1864 to a family of Muslim religious clerics in Salyan, in the present-day Azerbaijan.

In 1905, he joined Alimardan bey Topchubashov, Reşit Ibragimov, Farrukh bey Vezirov and Ahmet Ağaoğlu as a part of the Azerbaijani delegation to an all-Russian convention of Muslims, where an agreement was reached on establishing of the Ittifaq al Muslimin a single Muslim party in Russian Empire.

[4] In 1906, Huseynzade started publishing the magazine Füyuzat [az] ("Fusion"), financed by the famous philanthropist Haji Zeynalabdin Taghiyev, and harshly criticized the Tsarist government in his writings.

[7] One of the streets in the Yasamal district of Baku is named after Ali bey Huseynzade and there's a statue of him in the center of his hometown.