Pujols is batting .322 this season with 44 home runs and 116 RBI in 446 at-bats.
His home run total ties him with Washington's Alfonso Soriano for second place in the National League.
Among other nominees are first baseman/designated hitter David Ortiz of Boston; Chicago White Sox left-fielder Jermaine Dye; Cincinnati Reds center-fielder Ken Griffey, Jr.; Philadelphia second baseman Chase Utley and New York Mets first baseman Carlos Delgado.
Each Major League club nominated a player.
The award is given each year to the player who demonstrates Clemente's values, his commitment to community, and understanding the value of helping others.