Iwata was generally a private individual, and details about his personal life were not widely publicized. He preferred to focus on his work and contributions to the video game industry.

Iwata was married, and his wife's name has generally been kept out of the public eye. She remained a supportive figure throughout his career and during his illness.

Iwata was known for his strong relationships with his colleagues at both HAL Laboratory and Nintendo. He fostered a collaborative and supportive work environment, and he was respected and admired by his peers.

Iwata shared a particularly close friendship with Shigeru Miyamoto, the creator of many iconic Nintendo franchises. Their collaboration and mutual respect were instrumental in shaping Nintendo's success. They were collaborators and friends.

Despite his prominent position in the industry, Iwata was known for his humble and approachable demeanor. He was regarded as a kind and genuine person, and he made a point of connecting with people on a personal level.