| Du Xi | |
| Native Name: | 杜襲 |
| Office: | Palace Counsellor (太中大夫) |
| Office1: | Military Adviser to the General-in-Chief (大將軍軍師) |
| Monarch1: | Cao Rui |
| Office2: | Master of Writing (尚書) |
| Monarch2: | Cao Pi |
| Office3: | Imperial Secretary Supervising Military Supplies (督軍糧御史) |
| Monarch3: | Cao Pi |
| Office4: | Chief Clerk to the Imperial Chancellor (丞相長史) |
| Monarch5: | Emperor Xian of Han |
| Chancellor5: | Cao Cao |
| Office6: | Chief Commandant of Escorting Cavalry (駙馬都尉) |
| Term6: | 216 |
| Monarch6: | Emperor Xian of Han |
| Chancellor6: | Cao Cao |
| Birth Date: | Unknown |
| Birth Place: | Ye County, Henan |
| Death Date: | Unknown |
| Children: | Du Hui |
| Occupation: | General |
| Blank1: | Courtesy name |
| Data1: | Zixu (子緒) |
| Blank2: | Posthumous name |
| Data2: | Marquis Ding (定侯) |
| Blank3: | Peerage |
| Data3: | Marquis of Pingyang District (平陽鄉侯) |
Du Xi (190s–231), courtesy name Zixu, was an adviser to the warlord Cao Cao during the late Eastern Han dynasty of China. He was a subordinate of Cao Cao's general Xiahou Yuan. Du Xi proposed to the troops that Zhang He take command after Xiahou Yuan was killed at the Battle of Mount Dingjun. He continued serving as an official in the state of Cao Wei, established by Cao Cao's successor Cao Pi, during the Three Kingdoms period.