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John "Jack" P. Riegel III

Obituary for John "Jack" P. Riegel III

November 17, 1954 - September 8, 2019
San Antonio, Texas | Age 64


Jack was more than a husband, dad, and grandpapa; he was a shining example of a man devoted to his family, friends, community and making the world a little better through knowledge and personal commitment. Jack's work, often in support of the military and international research institutions, took him all around the globe and allowed him to develop lasting friendships in many countries. Jack spent much of his life in San Antonio and had recently returned from living 10 years in Washington D.C. to start a new chapter with his wife Roxy in the Hill Country. His retirement included developing his home into a mini-escape for his 3 children, their spouses, and his 6 grandchildren, as well as consulting and teaching. His active brain would not allow him to entirely stop searching for answers to the next unknown.

Jack received degrees in Applied Physics and Mechanical Engineering. He loved learning and teaching and was always absorbing new perspectives that he willingly shared. Dubbed 'the most interesting man in the world,' he lived up to that claim again and again.

Jack enjoyed scuba diving, photography, riding his Harley, cooking, endless projects, hunting, hosting parties, attending concerts, and traveling the world. He loved spreading kindness and joy to all. He particularly enjoyed being Santa Claus and seeing the smiles on kids' faces. Jack was happiest when he was with his family and friends.

Jack is survived by his wife, Roxy; his 3 children: Julie and husband James, Adam and wife Carina, and Kelly and husband Mason; his 6 grandchildren: Cadence, Gianna, Connor, Laszlo, Lucas, and Corbin; his devoted pup GP; his mother Joan; as well as siblings, nieces, nephews and extended family, all whom he adored. He was preceded in death by his father, John P. Riegel, Jr. Jack left us too soon and will be dearly missed by all.

"The atoms of our bodies are traceable to stars that manufactured them in their cores and exploded these enriched ingredients across our galaxy, billions of years ago. For this reason, we are biologically connected to every other living thing in the world. We are chemically connected to all molecules on Earth. And we are atomically connected to all atoms in the universe. We are not figuratively, but literally stardust." -Neil deGrasse Tyson

The family will receive friends from 6:00 p.m. to 8:00 p.m. on Thursday, September 12, 2019 at Porter Loring Mortuary North.

2:00 P.M.

2:30 P.M.

The family will be establishing a scholarship in Jack's name. An account has been setup at: for those would like to make a donation.

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Porter Loring Mortuary North

2102 North Loop 1604 East
San Antonio, TX 78232
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