This is a list of LEGO themes, or lines of LEGO sets, according to their official categorization.
This article is an attempt to create a list of all lines of LEGO sets, commonly called "themes," such as "LEGO Town" and "BIONICLE" and the years they were introduced and removed. This does not include years where a certain theme was dropped and brought back the next year.
LEGO System[]

The LEGO System logo from 1992 onwards.
- Wooden Toys (1932–1960)
- Automatic Binding Brick (1949–1953)
- LEGO Mursten (1952–1955)
- System I Leg (1955–1970)
- System i Leg Accessories (1955–1970)
- HO 1:87 Vehicles (1955–1970)
- Mosaik (1955–1957)
- Town Plan (1955–1966)
- Basic (1957)
- Modulex (1957)
- Universal Building Set (1960–1987)
- Basic Promotion Sets (1969–2005)
- Classic (1966–1999, 2014–present)
- Trains (1966–present)
- Train Accessories (1967–present)
- 4.5V (1966–1986)
- 12V (1969–1987)
- 9V (1991–2007)
- RC (2006–2009)
- Power Functions (2009–present)
- Powered Up (2018–present)
- Minitalia (1970–1976)
- Boats (1973–1996)
- Homemaker (1974–1977)
- Town (1978–present)
- Classic Town (1978–1989)
- Town Airport (1985–2004)
- Race (1985–1998, 2000)
- Flight (1987, 1991–1996, 2006)
- Service and Repair (1987–1989)
- High Speed Adventure (1987–1988)
- Emergency (1987–1988)
- Houses (1991)
- Rescue (1991–1996)
- Fire (1991–1993, 1996)
- Police (1991–1993, 1996)
- Vehicles (1991, 1993)
- Paradisa (1992–1997)
- Nautica (1992–1993)
- RSQ911 (1991–1992)
- Leisure (1993)
- Octan (1993)
- Launch Command (1995)
- Divers (1997–1998)
- Outback (1997)
- Town Jr. (1997–1998, 2001–2002)
- Extreme Team (1998–2000)
- Res-Q (1998–1999)
- City Center (1998–2001)
- Space Port (1999–2000)
- Arctic (2000, 2014, 2018)
- World City (2003–2004)
- City (2005–present)
- Transportation (2007–2008)
- Farm (2009–2010)
- Space (2011, 2019)
- Forest (2012)
- Great Vehicles (2012–2018)
- Mining (2012, 2018)
- Deep Sea Explorers (2015)
- Demolition (2015)
- Space Exploration (2015)
- Stuntz (2021–present)
- Space (1978–2001, 2007–2013)
- Classic Space (1978–1988)
- Blacktron I (1987–1990)
- Futuron (1987–1990)
- Space Police I (1989–1990, 1993)
- M-Tron (1990–1993)
- Blacktron Future Generation (1991–1993)
- Space Police II (1992–1993, 1999)
- Ice Planet 2002 (1993–1994, 1999)
- Unitron (1994–1995)
- Spyrius (1994–1997, 1999)
- Exploriens (1996–1997)
- Roboforce (1997)
- UFO (1997–1999)
- Insectoids (1998–1999)
- Life on Mars (2000–2001)
- Mars Mission (2007–2009)
- Space Police III (2009–2010)
- Alien Conquest (2011)
- Galaxy Squad (2013)
- Castle (1978–2000, 2002–2014)
- Black Falcons (1984–1993)
- Forestmen (1987–1990)
- Crusaders (1987–1993, 1998)
- Black Knights (1987–1994, 1998)
- Wolfpack (1992–1993)
- Dragon Masters (1993–1995, 1998)
- Royal Knights (1995–1998)
- Dark Forest (1996)
- Fright Knights (1997–1998)
- Ninja (1998–2000)
- Knight's Kingdom (2000, 2002–2003, 2006)
- Knight's Kingdom II (2004–2006)
- Castle (2007) (2007–2009)
- Kingdoms (2010–2012)
- Castle (2013) (2013–2014)
- Fabuland (1979–1989)
- Model Team (1986–1999)
- Pirates (theme) (1989–1997, 2001–2020)
- Governors (1989––2010)
- Islanders (1994–1996, 2001)
- Imperial Armada (1996–1997, 2001)
- FreeStyle (1992, 1994–1999)
- Belville (1994–2008)
- Aquazone (1995–1999)
- Aquanauts (1995–1996)
- Aquasharks (1995–1996, 1998)
- Aquaraiders (1997–1998)
- Hydronauts (1998–1999)
- Stingrays (1998)
- Western (1996–1997, 2002)
- Time Cruisers (1996–1997)
- Time Twisters (1997)
- Adventurers (1998–2003)
- Adventurers Egypt (1998–1999)
- Adventurers Amazon (1999–2000)
- Dino Island (2000)
- Orient Expedition (2003)
- Radio Control (1998, 2001)
- Rock Raiders (1999–2000)
- Star Wars (1999–present)
- Episode I: The Phantom Menace
- Episode II: Attack of the Clones
- Episode III: Revenge of the Sith
- Episode IV: A New Hope
- Episode V: The Empire Strikes Back
- Episode VI: Return of the Jedi
- Episode VII: The Force Awakens
- Episode VIII: The Last Jedi
- Episode IX: The Rise of Skywalker
- Solo: A Star Wars Story
- Expanded Universe
- Star Wars: The Clone Wars
- Star Wars Rebels
- Star Wars Resistance
- LEGO Star Wars: The Freemaker Adventures
- Star Wars: The Mandalorian
- Star Wars: The Bad Batch
- Star Wars: The Book of Boba Fett
- Star Wars: Obi-Wan Kenobi
- Star Wars: Young Jedi Adventures
- Star Wars: Ahsoka
- Bulk Bricks (2000–2006)
- Disney (2000, 2010–present)
- Mickey Mouse (2000–present)
- Prince of Persia (2010)
- Toy Story (2010)
- Cars (2010–present)
- Pirates of the Caribbean (2011,2017)
- The Lone Ranger (2013)
- Disney Princess (2014–present)
- The Incredibles (2018)
- The Muppets (2022)
- Disney 100 (2023)
- Studios (2000–2004)
- Sports (2000–2007)
- Soccer/Football (2000–2004, 2006–2007)
- Gravity Games (2003–2004)
- Basketball (2003–2004)
- Hockey (2003–2004)
- BIONICLE (2001–2010)
- Alpha Team (2001–2005)
- Mission Deep Sea (2002–2003)
- Mission Deep Freeze (2004–2005)
- Harry Potter (2001–present)
- Harry Potter and the Philosopher's Stone
- Harry Potter and the Chamber of Secrets
- Harry Potter and the Prisoner of Azkaban
- Harry Potter and the Goblet of Fire
- Harry Potter and the Order of the Phoenix
- Harry Potter and the Half-Blood Prince
- Harry Potter and the Deathly Hallows
- Fantastic Beasts and Where to Find Them
- Dinosaurs (2001)
- Jack Stone (2001–2003)
- Racers (2001–present)
- Crash It Racers (2001)
- Drome Racers (2002–2004)
- RC (2002–present)
- Williams F1 (2003)
- Ferrari (2004–present)
- Power Racers (2005–present)
- Tiny Turbos (2005–present)
- Lamborghini (2009–present)
- FIRST LEGO League (2001–2009)
- Island Xtreme Stunts (2002–2003)
- 4 Juniors / 4 Plus (2003–2004)
- City (2003–2004)
- Pirates (2004)
- Spider-Man 2 (2004)
- Make & Create (2003–present)
- Creative Building (2003–2008)
- Inventor (2003)
- Designer Sets (2003–2006)
- Creator (2005–present)
- X-Pod (2004–2006)
- Mosaic (2007)
- Modular Buildings (2007–present)
- Bricks & More (2009–2014)
- Discovery (2003)
- Factory (2005–2008)
- Vikings (2005–2006)
- Dino Attack / Dino 2010 (2005)
- Bricks and More (2006–2014)
- Exo-Force (2006–2008)
- SpongeBob SquarePants (2006–2012)
- Avatar: The Last Airbender (2006)
- Batman (2006–present)
- Aqua Raiders (2007)
- Indiana Jones (2008–2009, 2023)
- Raiders of the Lost Ark (2008)
- Temple of Doom (2009)
- Last Crusade (2008)
- Kingdom of the Crystal Skull (2008)
- Agents (2008–2009)
- Agents 2.0 (2009)
- Architecture (2008–present)
- Speed Racer (2008)
- Power Miners (2009–2010)
- LEGO Games (2009–2013)
- Heroica (2011)
- World Racers (2010)
- Atlantis (2010–2011)
- Minifigures (2010–present)
- Looney Tunes (2021)
- The Muppets (2022)
- Ninjago (2011–present)
- Pharaoh's Quest (2011)
- Alien Conquest (2011)
- Super Heroes (2012–present)
- DC Universe (2011–present)
- Marvel (2011–present)
- Dino (2012)
- Friends (2012–present)
- Monster Fighters (2012)
- The Lord of the Rings (2012–2014, 2023)
- The Lord of the Rings: The Fellowship of the Ring (2012–2014)
- The Lord of the Rings: The Two Towers (2012)
- The Lord of the Rings: The Return of the King (2012, 2013)
- The Hobbit (2012–2014)
- Legends of Chima (2013–2015)
- Teenage Mutant Ninja Turtles (2013–2014)
- The Simpsons (2014-2015, 2025-present)
- Mixels (2014–2016)
- The LEGO Movie (franchise) (2014–2016)
- The LEGO Batman Movie (2017–2018)
- The LEGO Ninjago Movie (2017–2018)
- The LEGO Movie 2 (2018–2019)
- Minecraft (2014–present)
- Ultra Agents (2014–2015)
- Elves (2015–2018)
- Speed Champions (2015–present)
- Jurassic World (2015, 2018–present)
- LEGO Dimensions (2015–2017)
- Scooby-Doo (2015–2016)
- Nexo Knights (2016–2018)
- The Angry Birds Movie (2016)
- Sonic the Hedgehog (2016, 2022–present)
- Unikitty! (2018)
- Xtra (2018–present)
- The Powerpuff Girls (2018)
- Overwatch (2019)
- FORMA (2019)
- Hidden Side (2019–2020)
- Stranger Things (2019)
- Trolls World Tour (2020)
- Minions: The Rise of Gru (2020)
- Monkie Kid (2020–Present)
- Super Mario (2020–Present)
- Luigi's Mansion (2022)
- Donkey Kong (2023)
- Mario Kart (2025)
- LEGO Art (2020)
- Vidiyo (2021)
- Looney Tunes (2021)
- The Muppets (2022)
- Transformers (2022, 2024-present)
- Avatar (2022–present)
- Dreamzzz (2023–present)
- Gabby's Dollhouse (2023–present)
- Animal Crossing (2024–present)
- Despicable Me 4 (2024–present)
- Fortnite (2024–present)
- Wicked (2024–present)
- Wednesday (2024–present)
- Bluey (2025-present)
- Horizon Adventures (2025-present)
- How to Train Your Dragon (2025-present)
- One Piece (2025-present)
- Star Trek (2025-present)
- Pokémon (2026-present)
Unreleased System themes[]
LEGO TECHNIC (1977–present)[]

LEGO TECHNIC logo from 2000 onwards.
- Universal (1982–1994)
- Arctic Action (1986)
- TechPlay (1995–1999)
- TechBuild (1995–2003)
- eLab (1998–1999, 2003)
- CyberMaster (1998)
- CyberSlam (1998–1999)
- Competition (2000)
- Mindstorms (1998–2002, 2004, 2006–2022)
- Spybotics (2002)
- Throwbots / Slizers (1999–2000)
- RoboRiders (2000)
- Speed Slammers (2000–2001)
- Star Wars (2000–2003)
- BIONICLE (2001–2010, 2015)
- Hero Factory (2010–2014)
LEGO DUPLO[]

DUPLO logo from 1997 onwards.
- DUPLO (1969–present)
- Play House (1979–2001)
- Mosaic (DUPLO) (1985)
- Trains (1983–present)
- Toolo (1992–2000)
- Action Wheelers (2000–2001)
- Dino (1997–1999, 2008)
- Western (1998)
- Little Forest Friends (1998–2000)
- Winnie the Pooh (1999–2001, 2011)
- Construction (1999)
- Dolls (2001)
- Bob the Builder (2001–2003, 2005–2007, 2009)
- Playpoint (2003)
- Ferrari (2004)
- LEGO Ville (2004–present)
- Castle (2004–present)
- Thomas & Friends (2005–2010)
- Airport (2005–2006)
- Pirates (2006)
- Toy Story (DUPLO) (2010)
- Cars (2010–2012, 2015)
- Disney Princess (2012–present)
- Jake and the Never Land Pirates (2013–2014)
- Mickey Mouse & Friends (2013–2014)
- Planes (2013–2014)
- DC Universe Super Heroes (2014)
- Sofia the First (2015)
- Primo (1996–2001)
- Baby (1987–1996, 1999–2006)
- Mickey Mouse (2000–present)
- Explore (2002–2004) (merging of LEGO DUPLO and LEGO Baby)
- Explore Imagination
- Explore Logic
- Explore Together
- Explore Being Me
- Little Robots (2003–2004)
- Dora the Explorer (2004)
- Bob the Builder
- Brick Runners (1999, 2002)
- Quatro (2004–2006)
Others[]
- Znap (1998–1999)
- Scala (1979–1980, 1997–2001)
- Galidor (2002)
- Clikits (2003–2006)
- Bulk (2000–present)
- Dacta or Education Division
- DOTS (2020)