Henry George Thode (September 10, 1910 – March 22, 1997) was a Canadian geochemist, nuclear chemist, and academic administrator.

In 1934, he received his PhD in physical chemistry from the University of Chicago.

He joined McMaster University in 1939 as an associate professor of chemistry, became a full professor in 1944; was named director of research in 1947; appointed head of the chemistry department from 1948 to 1952; became principal of Hamilton College in 1949; appointed vice-president in 1957; and in 1961 became president and vice chancellor.

[1] He was made a Member of the Order of the British Empire for his contributions to atomic research during World War II.

The science and engineering library at McMaster University is named after him.