| Luftröhre | trachea windpipe |
| Luftfahrt | aviation |
| Leuchtröhre | fluorescent tube |
| Lötrohr | blowpipe |
| Luftburg | bouncing castle |
| Luftholen | gasp |
| Luftmasse | air mass |
| luftmasse | airmass |
| Luftmine | blockbuster |
| Luftblase | bubble air pocket bleb bubble of air |
| Luftbrücke | airlift |
| Lufthoheit | air sovereignty |
| Luftkurort | climatic health resort health resort |
| Luftlinie | as the crow flies beeline |
| Luftloch | air hole air pocket |
| Luftpost | airmail |
| Luftpumpe | air pump Antlia |
| Luftraum | airspace |
| Luftrüssel | party horn |
| Luftwaffe | air force |