The men's 400 metres hurdles event at the 1955 Pan American Games was held at the Estadio Universitario in Mexico City on 14 March.Full results

Results Rank Name Nationality Time Notes Josh Culbreath 51.5 GR Jaime Aparicio 51.8 Wilson Carneiro 53.0 4 Amadeo Francis 53.9 5 Juan Leiva 54.7 6 Óscar Fernández 56.1 7 Miguel Menéndez 56.6

References