Marcellus Boss
| Marcellus Boss | |
|---|---|
| Governor of Guam Interim | |
| In office November 14, 1959 – August 22, 1960 | |
| Preceded by | Richard Barrett Lowe | 
| Succeeded by | Joseph F. Flores | 
| Secretary of Guam | |
| In office November 1, 1957 – 1959 | |
| Governor | Richard Barrett Lowe | 
| Preceded by | William Corbett | 
| Succeeded by | A. M. Edwards | 
| Member of the Kansas State Senate | |
| In office 1945–1949 | |
| Personal details | |
| Born | Marcellus Graeme Boss January 24, 1901 Plymouth, Indiana | 
| Died | March 21, 1967 (aged 66) Kansas, United States | 
| Nationality | United States | 
| Political party | Republican | 
| Signature | |
Marcellus Graeme Boss (January 24, 1901 – March 21, 1967) was an interim Governor of Guam from November 14, 1959, until his resignation on August 22, 1960.
Boss first entered Guamanian administration with a 1957 appointment by President Dwight D. Eisenhower to the post of Secretary of Guam. He also served as a Republican member of the Kansas State Senate prior to becoming involved in the government of Guam. He was city clerk and city attorney of Kiowa, Kansas, and had a thirty-year law career in Columbus, Kansas. He died of a heart attack on March 21, 1967, and was buried at the City Cemetery in Columbus, Kansas.