Image | Item No. | Description |
| 5005-1 (Inv) | Battery Box 4.5V, Gray 2 Parts, 1987 Catalog: Sets: Service Packs |
| 1135-3 (Inv) | Battery Cable Kit: 20 Connectors, 3m Cable 21 Parts, 1981 Catalog: Sets: Service Packs |
| 5100-1 (Inv) | Battery Rod 4.5V 2 Parts, 1 Book, 1987 Catalog: Sets: Service Packs: Technic |
| 161-1 (Inv) | Battery Wagon with Signal and Direction - Changing 7 Parts, 1972 Catalog: Sets: Train: Supplemental: 4.5V |
| 40431-1 (Inv) | BB-8 171 Parts, 2020 Catalog: Sets: Brick Sketches: Star Wars: Star Wars Episode 7 |
| 30635-1 (Inv) | Beach Cleanup polybag 46 Parts, 1 Minifigure, 2023 Catalog: Sets: Friends |
| 562304-1 (Inv) | Beach Shop and Dolphin paper bag 32 Parts, 2023 Catalog: Sets: Friends |
| 5234-1 (Inv) | Beams and Plates with Holes, Black 20 Parts, 1987 Catalog: Sets: Service Packs: Technic |
| 5249-1 (Inv) | Beams and Plates with Holes, Red 20 Parts, 1987 Catalog: Sets: Service Packs: Technic |
| 5231-1 (Inv) | Beams and Plates with Holes, Yellow 20 Parts, 1987 Catalog: Sets: Service Packs: Technic |
| 5250-1 (Inv) | Beams with Holes, Yellow 8 Parts, 1987 Catalog: Sets: Service Packs: Technic |
| 1223-1 (Inv) | Beams, Black 8 Parts, 1982 Catalog: Sets: Service Packs: Technic |
| 1222-1 (Inv) | Beams, Blue 8 Parts, 1982 Catalog: Sets: Service Packs: Technic |
| 1224-1 (Inv) | Beams, Red 8 Parts, 1982 Catalog: Sets: Service Packs: Technic |
| 1221-1 (Inv) | Beams, Yellow 8 Parts, 1982 Catalog: Sets: Service Packs: Technic |
| 5413-1 (Inv) | Beauty Set 19 Parts, 1999 Catalog: Sets: Service Packs: Scala |
| 40421-1 (Inv) | Belle Bottom, Kevin & Bob 309 Parts, 2021 Catalog: Sets: BrickHeadz: Despicable Me and Minions: Minions The Rise Of Gru |
| 30582-1 (Inv) | Birthday Bear polybag 80 Parts, 2022 Catalog: Sets: Creator: Basic Model: Holiday & Event: Birthday |
| 30565-1 (Inv) | Birthday Clown polybag 59 Parts, 2021 Catalog: Sets: Creator: Basic Model: Holiday & Event: Birthday |
| 831-1 (Inv) | Black Bricks Parts Pack 46 Parts, 1980 Catalog: Sets: Universal Building Set: Supplemental |
| 291-1 (Inv) | Blackboard and School Desk 89 Parts, 1973 Catalog: Sets: Homemaker |
| 932-1 (Inv) | Blue and Yellow Bricks 45 Parts, 1973 Catalog: Sets: Universal Building Set: Supplemental |
| 832-1 (Inv) | Blue Bricks Parts Pack 46 Parts, 1980 Catalog: Sets: Universal Building Set: Supplemental |
| 1118-1 (Inv) | Boat Weight, Red 1 Part, 1977 Catalog: Sets: Service Packs |
| 312-4 (Inv) | Boats 107 Parts, 1961 Catalog: Sets: Classic: Vehicle: Harbor |
| 5074-1 (Inv) | Bogie Plates, Black 2 Parts, 1987 Catalog: Sets: Service Packs: Train |
| 5001121-1 (Inv) | BR LEGO Minifigure polybag 1 Part, 1 Minifigure, 2013 Catalog: Sets: Collectible Minifigures: Promotional |
| 5096-1 (Inv) | Brick 2 x 2, Millwing 2 Parts, 1989 Catalog: Sets: Service Packs: DUPLO |
| 1133-1 (Inv) | Brick Hinges 8 Parts, 1981 Catalog: Sets: Service Packs |
| 821-1 (Inv) | Brick Separator, Gray 1 Part, 1990 Catalog: Sets: Universal Building Set: Supplemental |
| 516-1 (Inv) | Bricks and Half Bricks 20 Parts, 1975 Catalog: Sets: DUPLO: Basic Set |
| 5187-1 (Inv) | Bricks with Groove and Garage Panels 26 Parts, 1989 Catalog: Sets: Service Packs |
| 5237-1 (Inv) | Bricks with Holes, Black 8 Parts, 1987 Catalog: Sets: Service Packs: Technic |
| 5238-1 (Inv) | Bricks with Holes, Red 8 Parts, 1987 Catalog: Sets: Service Packs: Technic |
| col24-3 (Inv) | Brown Astronaut and Spacebaby, Series 24 (Complete Set with Stand and Accessories) 3 Parts, 2 Minifigures, 2023 Catalog: Sets: Collectible Minifigures: Series 24 Minifigures |
| 1136-1 (Inv) | Buffers, Magnetic Couplers 6 Parts, 1981 Catalog: Sets: Service Packs: Train |
| 5303-1 (Inv) | Buffers, Magnets & Couplers 6 Parts, 1992 Catalog: Sets: Service Packs: Train |
| 4027-1 (Inv) | Build and Imagine 100 Parts, 2003 Catalog: Sets: Creator: Basic Set |
| 30435-1 (Inv) | Build Your Own Hogwarts Castle polybag 62 Parts, 1 Minifigure, 2022 Catalog: Sets: Harry Potter: Mini |
| 30563-1 (Inv) | Build your own Snail polybag 36 Parts, 2021 Catalog: Sets: Creator: Basic Model: Creature |
| 5010-1 (Inv) | Building Plate 16 x 32, Green 1 Part, 1990 Catalog: Sets: Service Packs |
| 5009-1 (Inv) | Building Plate 16 x 32, Yellow 1 Part, 1990 Catalog: Sets: Service Packs |
| 510-3 (Inv) | Building Set 17 Parts, 1969 Catalog: Sets: DUPLO: Basic Set |
| 511-1 (Inv) | Building Set 27 Parts, 1969 Catalog: Sets: DUPLO: Basic Set |
| 1230-1 (Inv) | Bulldozer Chain Links 54 Parts, 1982 Catalog: Sets: Service Packs: Technic |
| 344-1 (Inv) | Bungalow 77 Parts, 1969 Catalog: Sets: LEGOLAND: Building |
| 77047-1 (Inv) | Bunnie's Outdoor Activities 161 Parts, 1 Minifigure, 2024 Catalog: Sets: Animal Crossing |
| 40005-1 (Inv) | Bunny 82 Parts, 2010 Catalog: Sets: Holiday & Event: Easter |
| 41087-1 (Inv) | Bunny & Babies 47 Parts, 2015 Catalog: Sets: Friends |
| 562302-1 (Inv) | Bunny at Veterinary Station foil pack 21 Parts, 2023 Catalog: Sets: Friends |