| Liang Xi | |
| Native Name: | 梁習 |
| Office: | Minister of Finance (大司農) |
| Office1: | Inspector of Bing Province (并州刺史) |
| Monarch1: | Cao Pi |
| Monarch2: | Emperor Xian of Han |
| Birth Date: | Unknown |
| Birth Place: | Zhecheng County, Henan |
| Death Date: | 230 |
| Children: | Liang Shi |
| Occupation: | Official |
| Blank1: | Courtesy name |
| Data1: | Ziyu (子虞) |
| Blank2: | Peerage |
| Data2: | Marquis of Shenmen Village (申門亭侯) |
Liang Xi (died 230), courtesy name Ziyu, was an official of the state of Cao Wei during the Three Kingdoms period of China. He was from Zhe County (Chinese: 柘縣), Chen Commandery (Chinese: 陳郡), which is around present-day Zhecheng County, Henan. He served as the Inspector of Bing Province. At one time, he achieved compliance from the Xiongnu to then settle the frontier and to launch an agricultural sericulture (silk production from silkworm) industry.
He was later promoted to the position of Minister of Finance (Chinese: 大司農) in 228.