Interlocking

Les Pleiades (Arjeu)
LetterBox
Letterbox (Koch)
Lift
Lindy Hop
Link Locked Box
Literal Lateral Slide Puzzle
Little Kenny
Little Love
Little Maze Box
Little Paperclip
Livecube
Livecube 3d Cross
Lock-N Cube
Lock-o-Box
Lock-Y Cube
Locked Cube I
Locking Cube
Logs & Sticks
LOL
Looped Nine