| Sigu | |
| Nativename: | Sighu |
| States: | Gabon |
| Speakers: | 1,000 |
| Date: | 1990 |
| Ref: | e18 |
| Familycolor: | Niger-Congo |
| Fam2: | Atlantic–Congo |
| Fam3: | Benue–Congo |
| Fam4: | Bantoid |
| Fam5: | Bantu (Zone B) |
| Fam6: | Kele (b. 20) |
| Iso3: | sxe |
| Glotto: | sigh1238 |
| Glottorefname: | Sighu |
| Guthrie: | B.202 |
Sigu (Sighu) is an undocumented threatened Bantu language spoken in Gabon.