|Real Name:||Harry Jackson (Possibly)|
|Current Location:||Mission City, USA|
|Family:|| Ellen MacGyver, née Hayes † (Daughter-in-law) †
Angus MacGyver (Grandson)
|Children:||James MacGyver (Son) †|
|First appearance:||X-Ray + Penny|
|Portrayed by:||Michael O’Keefe|
Harry MacGyver raised Angus MacGyver after his father walked out when he was 12 years old.
Angus MacGyver: Like my grandfather used to say "Whatever doesn't kill you, only makes you want to get even." 
Mac's grandfather took him to his first basketball game when he was 7 years old. But they left before it was over. Stating it doesn't matter who wins or loses, but how you play the game. 
Bozer told Riley Davis about when he and Angus MacGyver went camping with mac's grandfather He'd brought everything he would think of, & his grandfather made him leave it behind. and said...
Wilt Bozer: All you need to survive, is what’s up here, (points to his head) and what’s out there. 
- Angus MacGyver mentioned his grandfather originally live in his house, and the mortgage was paid off.