[4] Some other, less common surnames pronounced Hu include 瓠, 護, 戶, 扈, 虎, 呼, 忽, 斛 and 壶.

Fourth, Hu could derive from the clan name of the ancient Tiele people within the Xiongnu confederation.

The best example is Hu 胡, which was anciently used to refer to "barbarian" groups on the northern and western frontiers of China.

Hu (Foochow Romanized: Hù; POJ: Hô or Ô) was also one of the eight surnames of the first Han Chinese clans who first moved out the Central Plains into Fujian province (八姓入閩; Foochow Romanized: Báik Sáng Ĭk Mìng) during this conflict.

[9][10][11][12][13][14][15][16] Based on a study in 2020, Hu is a common surname in Italy due to significant amount of immigration population from Zhejiang.