LBW or lbw may refer to:
- Laser beam welding, a type of high-precision energy beam welding
- Leg before wicket, one of the ways in which a batsman can be dismissed in the sport of cricket
- Lil' Bow Wow (now known as Bow Wow, born 1987), former name of the American rapper, actor, and music producer
- LBW Entertainment, a record label owned by rapper Bow Wow (formerly Lil' Bow Wow)
- Linux Bier Wanderung (a.k.a. Linux Beer Hike), a yearly week-long social event for Open Source software enthusiasts
- Little Baby Wanda, aka "Lil' Baby Wanda" aka "Chief"; American comic book character known primarily as chain-smoking obscenity-spewing mischief-maker; sidekicks "Sheriff", "Big Don", and "The Princesses"
- Lord Browne-Wilkinson, the Senior Law Lord of the United Kingdom from 1998 to 2000.
- Low birth weight, when a child weighs less than 5 pounds, 8 ounces (2,500 grams) at birth
- Lutheran Book of Worship, a hymnal of the Evangelical Lutheran Church in America