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