The following are the baseball events of the year 1990 throughout the world.  

Vincent Edward "Bo" Jackson (born November 30, 1962) is a former American baseball and football player. He was the first athlete to be named an All-Star in two major American sports, and also won the Heisman Trophy in 1985.

In football, he played running back for the Los Angeles Raiders of the National Football League. In baseball, he played left field and designated hitter for the Kansas City Royals, the Chicago White Sox, and the California Angels of the American League in Major League Baseball. While at Auburn University, he won the 1985 Heisman Trophy, the prize annually awarded to the most outstanding collegiate football player in the United States. He also ran a 40-yard dash in a blistering 4.12 seconds (hand-timed), which is still the fastest verifiable 40-yard dash time ever recorded at any NFL Combine. A hip injury severely impaired his professional baseball career, and ended his NFL career.

In 1989 and 1990, Jackson's name became known beyond just sports fans through the "Bo Knows" advertising campaign, a series of advertisements by Nike, that starred Jackson alongside Rock and Roll Hall of Fame musician Bo Diddley, promoting a cross-training athletic shoe named for Jackson.