Henno
Henno stands for:
- Henno Käo (1942–2004), Estonian writer
- Henno Martin (1910–1998), German geologist
- Henno Sepmann (1925–1985), Estonian architect
- Sass Henno (* 1982), Estonian writer
- Key Henno, key method from the Second World War, see reserve manual procedure # Key Henno
