H&K can refer to:
- Heckler & Koch, a German weapons manufacturing company
- Hughes & Kettner, a German brand of guitar and bass amplifiers, cabinets and effects processors
- Harold & Kumar, a series of stoner comedies and its titular characters
- Hampstead and Kilburn, a UK parliament constituency
- The Calcium H and K lines, a pair of violet spectral lines
disambiguation page lists articles associated with the title H&K.
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