3B

3-B or 03b, may refer to:

3B or 3B may refer to: Third baseman Triple (baseball) 3B Computers, a range of computers produced by AT&T during the 1980s 3B Junior, a department of the Japanese entertainment company Stardust Promotion 3B Lab, a Japanese popular music group Three Bs, a designation for three well-known classical composers 3B, a very soft grade of pencil lead Big Beautiful Bill, a 2025 omnibus bill proposed by POTUS Donald Trump