Pro Baseball: Family Stadium, released as Pro Yakyū: Family Stadium in Japan and R.B.I. Baseball in North America, is a 1986 baseball video game developed and published by Namco for the Nintendo Entertainment System. In North America, it was published by Tengen as R.B.I. Baseball. It was also released in arcades through the Nintendo VS. System. It is the first game in the Family Stadium and R.B.I. Baseball franchises. The game was a critical and commercial success in Japan and North America.

Namco Limited was a Japanese multinational video game and entertainment company, headquartered in Ōta, Tokyo. It held several international branches, including Namco America in Santa Clara, California, Namco Europe in London, Namco Taiwan in Kaohsiung, and Shanghai Namco in mainland China.