Xiahou Ba (died c. 255–259), courtesy name Zhongquan, was a Chinese military general of the state of Cao Wei in the Three Kingdoms period of China.

Around 249, Xiahou Ba defected to Wei's rival state, Shu Han, after the regent Sima Yi seized power in a coup d'état.

After Xiahou Yuan was killed at Battle of Mount Dingjun in 219 at the hands of Shu general, Huang Zhong, most of his troops were placed under the command of Zhang He upon advice from Guo Huai, while his private militia and guards were succeeded by his five sons.

[3] In 230, when the Wei general Cao Zhen proposed a shift from defensive to offensive stance against Shu Han, Lieutenant-General (偏将军) Xiahou Ba was named as the vanguard.

Since then, Xiahou Ba was appointed General of the Right, and stationed in Longxi Commandery to train troops; he personally cared for his soldiers and established friendly relation with the foreign tribes (Xirong people) of the region hence he acquired their admiration.

Together with Guo Huai, Xiahou Ba repelled Jiang Wei's attack and struck back at the rebels, forcing many of them to surrender.

[11] Upon knowing Liao Hua was under attack, Jiang Wei harshly returned to his aide's assistance just as Guo Huai predicted, isolating the rebels from Shu reinforcement.

[12] As the Shu commander was worn out from the travel, so was Xiahou Ba, but the glory and merit of subjugating the rebellion went to Guo Huai, who was promoted to a district marquis for his achievements.

[14] On his way to Shu, Xiahou Ba lost his way and went into a dead end in a valley, where he ran out of food and resorted to killing his horse, taking the carcass as a last supper.

He kept walking until his legs were crippled, then he laid beneath a shadow projected from a large rock, and asked travellers for direction, but still could not figure out how to get out from the dead end.

Whether it was for political reasons or a private family issue, Liu Shan appointed the handicapped Xiahou Ba as General of Chariots and Cavalry in Shu.

A story about that was recorded in Yi Bu Qijiu Zhuan (益部耆舊傳), which says an eager Xiahou Ba once wanted to befriend Zhang Ni, who was famous for subjugating the southern barbarians and was one of the most celebrated Shu generals back then.

This incident was circulated within Shu, and knowledgeable persons and scholars found this anecdote worthy of Xiahou Ba and Zhang Ni character.