HLW may refer to:

• HLW International, an American architectural and engineering firm
• Hart Legacy Wrestling
• High-level waste
• Hillington West railway station, in Glasgow, Scotland
• Hluhluwe Airport, in KwaZulu-Natal, South Africa

• Trans-Caucasus Highway
• Transcaucasus highway
• Transcaucasus Highway
• Transcaucasus Railway
• Transceiver (album)
• Transcellular transport
• Transcend
• Transcendence (band)
• Transcendence Ep
• Transcendental argument
• Transcendental homelessness
• Transcendental Logic
• Transcendental logic
• Transcendental (mathematics)
• Transcendental Medication
• Transcendental Meditation methods
• Transcendental Meditation organization
• Transcendental Meditation research
• Transcendental Meditation(r) program
• Transcendental Meditation technique
• Transcendental Meditation techniques
• Transcendental Movement
• Transcendental Numbers
• Transcendental Perspectivism
• Transcendental Students