| Duke You of Chen 陳幽公 | |
| Succession: | 6th ruler of Chen |
| Reign: | 854–832 BC |
| Predecessor: | Duke Shèn of Chen |
| Successor: | Duke Xi of Chen |
| Full Name: | Gui Ning (媯寧) |
| Father: | Duke Shèn of Chen |
| Issue: | Duke Xi of Chen |
| Death Date: | 832 BC |
| House: | Gui |
| Dynasty: | Chen |
| Posthumous Name: | Duke You (幽公) |
Duke You of Chen (; reigned 854 BC – died 832 BC), personal name Gui Ning, was a duke of the Chen state.
Duke You succeeded his father Duke Shèn, who died in 855 BC. He died in 832 BC, the tenth year of the Gonghe Regency, after a reign of 23 years. He was succeeded by his son, Xiao (Duke Xi).