Seth Msinjili (MVSc; PhD) is the Tanzania YMCA chairman.
Seth joined YMCA while still in secondary school. He left for his studies in the former Soviet Union for 10 years but in two different sessions of 6 and 4. He also stayed for sometime in Australia before settling down in his own country, Tanzania. He rejoined YMCA and in 1997 as a Branch Chairman and in 2003, became National Chairman.