| Office: | 1st Governor of Nyeri County |
| Term Start: | March 2013 |
| Term End: | 24 February 2017 |
| Deputy: | Wamathai Samuel Githaiga |
| Predecessor: | Position established |
| Successor: | Wamathai Samuel |
| Birth Date: | 29 July 1952 |
| Spouse: | Margaret Nyokabi |
| Death Place: | London, United Kingdom |
James Nderitu Gachagua (29 July 1952 – 24 February 2017) was a Kenyan politician who served as the first governor of Nyeri County having been elected in March 2013 on a GNU party ticket alongside deputy governor, Wamathai Samwel Githaiga. Nderitu studied Building Economics at the University of Nairobi. Before becoming governor, he served as the Member of Parliament for Mathira constituency.[1]
Gachagua died on 24 February 2017 at the Royal Marsden Hospital in London while undergoing treatment for pancreatic cancer.[2] [3]