| OTI Festival 1973 | |
|---|---|
 | |
| Dates | |
| Final | 10 November 1973 |
| Host | |
| Venue | Palácio das Artes, Belo Horizonte, Brazil |
| Presenter(s) | |
| Host broadcaster | TV Itacolomi–Rede Tupi |
| Participants | |
| Number of entries | 14 |
| Debuting countries |  Mexico |
| Vote | |
| Voting system | Each country had 5 jurors and each of them voted for their favourite entry. |
| Winning song | Mexico Imelda Miller: "Que alegre va María" |
The OTI Festival 1973 (Spanish: Segundo Gran Premio de la Canción Iberoamericana, Portuguese: Segundo Grande Prêmio da Canção Ibero-Americana) was the second edition of the annual OTI Festival. It was held in Belo Horizonte, Brazil, following the country's victory at the previous contest with the song "Diálogo" by Claudia Regina and Tobías. Organised by the Organización de Televisión Iberoamericana (OTI) and host broadcaster Rede Tupi throughout its affiliate TV Itacolomi, the contest was held at the Palácio das Artes on Saturday 10 November 1973 and was hosted by Walter Forster and Íris Lettieri.
Fourteen countries took part, with Mexico competing for the first time and joining the original thirteen participating countries from the previous contest. Ecuador, who was also going to join for the first time, made a late withdrawal. It was precisely the Mexican entrant Imelda Miller who won the festival with the song "Qué alegre va María".