Largest empire (Medieval empires)

1.Mongol Empire - 33.2 million km² (under Khublai Khan in 1268)
2.Turkic Khaganate - 15 million km²
3.Umayyad Arab Empire - 13.2 million km²
4.Rashidun Arab Empire - 9 million km² (under Caliph Uthman in 654)[2]
5.Ming Chinese Empire - 6.5 million km²
6.Tang Chinese Empire - 5.4 million km²
7.Byzantine Empire/Eastern Roman Empire - 4.5 million km² (called themselves the 8Roman Empire)
8.Mughal Empire - 4 million km² (under Aurangzeb in 1690)
9.Seljuq Empire - 3.9 million km²
10.Sassanid Persian Empire - 3.5 million km²[1] (under Khosrau II in 626)
11.Xiongnu - 3.5 million km²
12.Ghaznavid Empire - 3.4 million km²
13.Pala Empire - 3.2 million km² (under Devapala)
14.Delhi Sultanate - 3.2 million km²
15.Uyghur Khaganate - 3.2 million km²
16.Nirun Khaganate - 3.1 million km²
17.Kalmar Union - 3 million km²
18.Khazar Empire - 3 million km²
19.Chola Empire - 2.6 million km² (under Rajendra Chola I)
20.Inca Empire (Tahuantinsuyu) - 2 million km² (Under Atahualpa in 1532)
21.Songhai Empire - 1.4 million km² (in 1500)[3]
22.Aksumite/Ethiopian Empire - 1.25 million km²[1]
23.Srivijaya Empire - 1.2 million km²
24.Frankish Empire - 1.2 million km²
25.Mali Empire - 1.1 million km²[1]
26.Harsha's empire - 1 million km² (under Harsha Vardhana in 648)
27.Almoravid Empire - 1 million km²
28.Khmer Empire - 1 million km²
29.Maratha Empire - 1 million km² ( in 1760 )
30.Grand Duchy of Lithuania - 930,000 km² (under Vytautas the Great in 1430)
31.Bulgarian Empire - 700,000 km² (under Tsar Simeon I)
32.Vijayanagara Empire - 360,000 km²
33.Serbian Empire - 200,000 km²