The 1973 Rallye de Portugal (formally the 7th TAP Rally of Portugal) was the third round of the inaugural World Rally Championship season.

Run in mid-March in southern Portugal on a mixture of asphalt and gravel, the rally began with a concentration run from a number of European cities, covering about 4,600 km and ending in Estoril, Portugal.

In 1973, and for several years afterward, only manufacturers were given points for finishes in WRC events.

As in the earlier Monte Carlo Rally, the Alpine A110s led the event, taking first and second place well ahead of other competitors.

Despite a significant number of international entries, only four non-Portuguese teams finished in the top 15 at the end.