Reginald Abraham Mengi (Nkuu Sinde, Machame Mashariki, Mkoa wa Kilimanjaro, 29 Mei 1942 - Dubai, 2 Mei, 2019) alikuwa mfanyabiashara wa Tanzania aliyehesabiwa kati ya matajiri wakuu wa Afrika (dola za Marekani milioni 560). Alikuwa mwenyekiti wa Shirikisho la Viwanda vya Tanzania, IPP Gold Ltd., Media Owners Association of Tanzania, mmiliki wa IPP Ltd. Tanzania na mwenyekiti wa Handeni Gold, Inc. Aliandika kitabu I Can, I Must, I Will. Mengi alitunukiwa: 2000-2003 - Most Respected CEO East Africa Community (EAC) 2008 - Martin Luther King Drum Major for Justice Award 2010 - Global Leadership and Humanitarian Award 2012 - United Nations NGO Lifetime Achievement Award 2012 - The Business for Peace Award 2012 - Honorary Doctor of Humanity Degree Award 2014 - International Order of the Lions Award 2014 - Business Leader of the Year Award "Reginald Mengi", Forbes. (en)  MarketScreener. Reginald Mengi, PhD - Biography. Mengi, Reginald Abraham (2018-07-01). I Can, I Must, I Will: The Spirit of Success, 1st (in English), IPP Limited.