| Image | Item No. | Description |
| 45008-1 (Inv) | Math Train 162 Parts, 5 Minifigures, 2015 Catalog: Sets: Educational & Dacta: DUPLO |
| 2000448-1 (Inv) | Max and Mia polybag 1 Part, 2 Minifigures, 2016 Catalog: Sets: Educational & Dacta |
| 75892-1 (Inv) | McLaren Senna 214 Parts, 1 Minifigure, 2019 Catalog: Sets: SPEED CHAMPIONS |
| 42123-1 (Inv) | McLaren Senna GTR 830 Parts, 2021 Catalog: Sets: Technic: Model: Race |
| 76918-1 (Inv) | McLaren Solus GT & McLaren F1 LM 571 Parts, 2 Minifigures, 2023 Catalog: Sets: SPEED CHAMPIONS |
| 10456-1 (Inv) | McQueen's Visit to Doc's Garage 33 Parts, 1 Minifigure, 2025 Catalog: Sets: DUPLO: Cars |
| 77078-1 (Inv) | Mecha Team Leader 2500 Parts, 1 Minifigure, 2025 Catalog: Sets: Fortnite |
| 31120-1 (Inv) | Medieval Castle 1408 Parts, 4 Minifigures, 2021 Catalog: Sets: Creator: Model: Castle: Black Falcons |
| 31161-1 (Inv) | Medieval Dragon 715 Parts, 2025 Catalog: Sets: Creator: Model: Creature |
| 31168-1 (Inv) | Medieval Horse Knight Castle 1341 Parts, 6 Minifigures, 2025 Catalog: Sets: Creator: Model: Castle |
| 88018-1 (Inv) | Medium Angular Motor 1 Part, 2021 Catalog: Sets: Power Functions: Powered Up |
| 45603-1 (Inv) | Medium Angular Motor 1 Part, 2020 Catalog: Sets: Educational & Dacta: SPIKE Prime |
| 88008-1 (Inv) | Medium Linear Motor 1 Part, 2019 Catalog: Sets: Power Functions: Powered Up |
| 45498-1 (Inv) | Medium Storage (8 Pack) 16 Gear, 2017 Catalog: Sets: Educational & Dacta: Supplemental |
| 42177-1 (Inv) | Mercedes-Benz G 500 PROFESSIONAL Line 2891 Parts, 2024 Catalog: Sets: Technic: Model: Off-Road |
| 11204-1 (Inv) | Mermaid Gabby's Aquarium Adventure 94 Parts, 3 Minifigures, 2025 Catalog: Sets: Gabby's Dollhouse: Gabby's Dollhouse The Movie |
| 43109-1 (Inv) | Metal Dragon BeatBox 80 Parts, 1 Minifigure, 2021 Catalog: Sets: Vidiyo: BeatBox |
| 75578-1 (Inv) | Metkayina Reef Home 508 Parts, 4 Minifigures, 2023 Catalog: Sets: Avatar: The Way of Water |
| 41403-1 (Inv) | Mia's Play Cube 36 Parts, 1 Minifigure, 2020 Catalog: Sets: Friends: Play Cube |
| 41664-1 (Inv) | Mia's Pug Cube 36 Parts, 1 Minifigure, 1 Gear, 2021 Catalog: Sets: Friends: Play Cube |
| 41669-1 (Inv) | Mia's Soccer Cube 52 Parts, 1 Minifigure, 1 Gear, 2021 Catalog: Sets: Friends: Play Cube |
| 41388-1 (Inv) | Mia's Summer Heart Box 81 Parts, 1 Minifigure, 2019 Catalog: Sets: Friends: Heart Box |
| 41413-1 (Inv) | Mia's Summer Play Cube 45 Parts, 1 Minifigure, 1 Gear, 2020 Catalog: Sets: Friends: Play Cube |
| 41717-1 (Inv) | Mia's Wildlife Rescue 418 Parts, 3 Minifigures, 2022 Catalog: Sets: Friends |
| 41361-1 (Inv) | Mia's Foal Stable 114 Parts, 1 Minifigure, 2019 Catalog: Sets: Friends |
| 41363-1 (Inv) | Mia's Forest Adventure 130 Parts, 1 Minifigure, 2019 Catalog: Sets: Friends |
| 41371-1 (Inv) | Mia's Horse Trailer 206 Parts, 2 Minifigures, 2019 Catalog: Sets: Friends |
| 41369-1 (Inv) | Mia's House 703 Parts, 3 Minifigures, 2019 Catalog: Sets: Friends |
| 10776-1 (Inv) | Mickey & Friends Fire Truck & Station 134 Parts, 3 Minifigures, 2021 Catalog: Sets: Disney: Mickey and Friends |
| 10780-1 (Inv) | Mickey and Friends Castle Defenders 198 Parts, 4 Minifigures, 2022 Catalog: Sets: Disney: Mickey and Friends |
| 10777-1 (Inv) | Mickey and Minnie's Camping Trip 96 Parts, 2 Minifigures, 2022 Catalog: Sets: Disney: Mickey and Friends |
| 40456-1 (Inv) | Mickey Mouse 118 Parts, 2021 Catalog: Sets: Brick Sketches: Disney: Mickey and Friends |
| 31202-1 (Inv) | Mickey Mouse 2658 Parts, 2021 Catalog: Sets: Art: Disney |
| 10775-1 (Inv) | Mickey Mouse & Donald Duck's Farm 111 Parts, 2 Minifigures, 2021 Catalog: Sets: Disney: Mickey and Friends |
| 43179-1 (Inv) | Mickey Mouse & Minnie Mouse 1739 Parts, 2020 Catalog: Sets: Disney: Sculptures |
| 10774-1 (Inv) | Mickey Mouse & Minnie Mouse's Space Rocket 81 Parts, 2 Minifigures, 2021 Catalog: Sets: Disney: Mickey and Friends |
| 10772-1 (Inv) | Mickey Mouse's Propeller Plane 56 Parts, 1 Minifigure, 2021 Catalog: Sets: Disney: Mickey and Friends |
| 10843-1 (Inv) | Mickey Racer 14 Parts, 1 Minifigure, 2017 Catalog: Sets: DUPLO: Disney: Disney Junior: Mickey and the Roadster Racers |
| 10889-1 (Inv) | Mickey's Vacation House 54 Parts, 3 Minifigures, 2019 Catalog: Sets: DUPLO: Disney: Disney Junior: Mickey |
| 10829-1 (Inv) | Mickey's Workshop 17 Parts, 1 Minifigure, 2016 Catalog: Sets: DUPLO: Disney: Disney Junior: Mickey Mouse Clubhouse |
| 10778-1 (Inv) | Mickey, Minnie and Goofy's Fairground Fun 173 Parts, 3 Minifigures, 2022 Catalog: Sets: Disney: Mickey and Friends |
| 45611-1 (Inv) | Micro USB Connector Cable 1 Part, 2020 Catalog: Sets: Educational & Dacta: SPIKE Prime |
| 76244-1 (Inv) | Miles Morales vs. Morbius 213 Parts, 2 Minifigures, 2023 Catalog: Sets: Super Heroes: Spider-Man |
| 76311-1 (Inv) | Miles Morales vs. the Spot 361 Parts, 4 Minifigures, 2025 Catalog: Sets: Super Heroes: Spider-Man Across the Spider-Verse |
| 75257-1 (Inv) | Millennium Falcon 1327 Parts, 7 Minifigures, 2019 Catalog: Sets: Star Wars: Star Wars Episode 9 |
| 2000700-1 (Inv) | Mindstorms Education (LME) Replacement Pack 1 70 Parts, 2015 Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 2000701-1 (Inv) | Mindstorms Education (LME) Replacement Pack 2 32 Parts, 2015 Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 2000702-1 (Inv) | Mindstorms Education (LME) Replacement Pack 3 4 Parts, 2015 Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 2000703-1 (Inv) | Mindstorms Education (LME) Replacement Pack 4 26 Parts, 2015 Catalog: Sets: Educational & Dacta: Service Packs |
| 2000704-1 (Inv) | Mindstorms Education (LME) Replacement Pack 5 24 Parts, 2015 Catalog: Sets: Educational & Dacta: Service Packs |