August Wilhelmi
August Wilhelmi or August Wilhelmj is the name of the following people:
- August Wilhelmi (1770–1810), pseudonym for the writer, doctor, translator and teacher August Wilhelm Meyer
- August Wilhelmj (August Emil Daniel Ferdinand Viktor Wilhelmj; August Wilhelmy; August Wilhelmi; 1845–1908), German violinist
- August Anton Heinrich Wilhelmi (before 1798 – after 1809), Hamburg artist and gold and silver worker
- August Wilhelm Wilhelmj (1813–1910), German lawyer and winery owner, see Wilhelmj-Haus