The following is a list of deaths that should be noted in March 2019. Names under each date are noted in the order of the alphabet by last name or pseudonym. Deaths of non-humans are noted here also if it is worth noting.
Michael Gielen, 91, Austrian conductor (Royal Swedish Opera, Opern- und Schauspielhaus Frankfurt, Southwest German Radio Symphony Orchestra), pneumonia.[41]
Ian Lawrence, 82, New Zealand politician, Mayor of Wellington (1983–1986), stomach cancer.[42]
Beril Dedeoğlu, 57, Turkish politician, Minister of European Union Affairs (2015), cerebral hemorrhage.[62]
Harry Hughes, 92, American politician, Governor of Maryland (1979–1987), member of the Maryland House of Delegates (1955–1959) and Senate (1959–1971), problems caused by pneumonia.[63]
Ghazali Jaafar, 75, Filipino militant (Moro Islamic Liberation Front) and politician, Speaker of the Bangsamoro Parliament (since 2019), kidney failure.[64]
Mohamed Mahmoud Ould Louly, 76, Mauritanian military officer and politician, Chairman of the Military Committee for National Salvation (1979–1980).[86]
Yulia Nachalova, 38, Russian singer, actress (Guerói yeio romana, Bomba dlia nevesty, Los tres mosqueteros) and television presenter, cerebral edema.[87]
René Fontès, 77, French rugby executive and politician, President of ASM Clermont Auvergne (2004–2013) and Mayor of Eygalières (since 2008), heart attack.[90]
Manohar Parrikar, 63, Indian politician, MP (2014–2017), Minister of Defence (2014–2017) and Chief Minister of Goa (2000–2005, 2012–2014, since 2017), pancreatic cancer.[93]
Rafi Eitan, 92, Israeli intelligence officer and politician, member of the Knesset (2006–2009) and Minister of Pensioner Affairs (2006–2009), stroke.[122]
Domenico Giannace, 94, Italian trade unionist and politician, member of the Regional Council of Basilicata (1980–1985).[146]
Jon Skolmen, 78, Norwegian actor (Sällskapsresan, Hodet over vannet).[147]
Henry Stern, 83, American politician, member of the New York City Council (1974–1983) and Commissioner of the New York City Department of Parks and Recreation (1983–1990, 1994–2000), complications from Parkinson's disease.[148]