Engelbart yana da 'ya'ya hudu, Gerda, Diana, Christina da Norman tare da matarsa na farko Ballard, wanda ya mutu a 1997 bayan shekaru 47 na aure. Ya sake yin aure a ranar 26 ga Janairu, 2008 ga marubuci da kuma furodusa Karen O'Leary Engelbart. An yi bikin cika shekaru 85 a gidansa na Tech Museum of Innovation. Engelbart ya mutu a gidansa a Atherton, California a ranar 2 ga Yuli, 2013, saboda rashin cin nasara na koda. A cewar Cibiyar Doug Engelbart, mutuwarsa ta zo ne bayan dogon yaki da cutar Alzheimer, wanda aka gano a 2007.
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