1973 Amateur World Series (FEMBA)

The 1973 FEMBA Amateur World Series was organized by World Amateur Baseball Federation (FEMBA), a splinter organization from the International Baseball Federation (FIBA). The tournament, which ran from November 22 through December 5, 1973, was primarily held in Nicaragua, with some games also held in neighboring Honduras and Costa Rica. It was one of two international championships held in 1973, along with the FIBA tournament held in Cuba, amid a period of conflict between the two rival governing bodies of an international baseball.

Most games were held in various cities in Nicaragua (Masaya, Granada, León, and Chinandega); after opening the series in Granada, Costa Rica and Honduras played the rest of their games in San José and Tegucigalpa, respectively. The tournament saw the first international championship for the United States, which defeated Nicaragua in the championship game, an extra innings pitcher's duel between Rich Wortham and Dennis Martínez. It was also one of the first international tournaments to use the designated hitter, which had been adopted by the American League of Major League Baseball earlier that year.

The 1973 FEMBA AWS is retroactively recognized as the 22nd edition of the Amateur World Series ("Amateur World Series XXII"), while the Havana edition is recognized as the 21st; despite this, the Nicaragua tournament started and ended earlier that the one held in Havana.