Hugo B. Margáin
 Hugo B. Margáin Gleason ((1913-02-13)13 February 1913 – 11 September 1997(1997-09-11)) was a Mexican economist politician and diplomat who served as Secretary of Finance in the cabinet of Luis Echeverría (1970-73) as ambassador of Mexico to the United States (1964-70 and 1976-82) as ambassador of Mexico to the United Kingdom (1973-76) and as senator representing the Institutional Revolutionary Party (PRI 1982-88).