Adam Alexander Loewen (born April 9, 1984 in Surrey, British Columbia) is a Canadian outfielder and first baseman for the Toronto Blue Jays, and formerly a pitcher. He bats and throws left-handed. He is 6'6" tall and weighs 220 pounds.
Loewen grew up in Surrey, British Columbia, and was both a starting pitcher and first baseman for the team that represented Canada at the 1996 Little League World Series in Williamsport, Pennsylvania. He would go on to attend Fraser Valley Christian High School and play baseball for the Fraser Valley Chiefs of the British Columbia Premier Baseball League. While playing for the Chiefs, Loewen was selected with the No. 4 overall pick of the 2002 Major League Baseball Draft by the Baltimore Orioles. This was the highest a Canadian player had ever been drafted until righthander Jameson Taillon was drafted 2nd overall by the Pittsburgh Pirates.
Loewen went on to play one season with Chipola College, but signed a Major League Baseball contract with Baltimore worth $4.02 million shortly thereafter. In 2004, he was named their top prospect by Baseball America. However, by early 2006, he had been downgraded to the team's second best prospect.