HHL

HHL could refer to:

Hafthohlladung, a German anti-tank mine of World War II
Handelshochschule Leipzig, now the HHL Leipzig Graduate School of Management
Haverhill (Amtrak station), in Massachusetts, United States
Harrow-Hassidim-Lloyd algorithm, a quantum algorithm for linear systems of equations
Heath High Level railway station, in Wales
Herefordshire Housing, a British social housing trust
Hecht-Hill-Lancaster Productions
Higher Hockey League, a Eurasian ice hockey league
Highway Hockey League, a Canadian ice hockey league