Hermione Granger

Fictional

Harry Potter character

Entertainment & Media

Frequently typed as ISTJ. Hermione Granger is a fictional character, so the typing is based on the character's behaviour in the source material rather than a formal assessment. Some communities debate the line between ISTJ and adjacent types — see the section below.

Why Hermione Granger is frequently typed as ISTJ

Fictional character (Harry Potter) — careful procedural attention to academic detail, rule-following combined with principled moral commitment, and the reserved analytical mode are heavily ISTJ-coded.

What makes an ISTJ (The Logistician)

ISTJs are Reliable, Organized, Detail-oriented. Approximately 11.6% of the population shares this type.

Hermione Granger's harry potter character work shows the ISTJ pattern most clearly in their entertainment & media domain — where ISTJs tend to apply reliable as a structural advantage.

Do you share Hermione Granger's personality type?

Take the free 5-minute MBTI test and find out if you're an ISTJ too.

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Traits, careers, relationships

Last updated: May 29, 2026

Hermione Granger

Fictional

Harry Potter character

Entertainment & Media

Why Hermione Granger is frequently typed as ISTJ

What makes an ISTJ (The Logistician)

ISTJs are Reliable, Organized, Detail-oriented. Approximately 11.6% of the population shares this type.

Hermione Granger's harry potter character work shows the ISTJ pattern most clearly in their entertainment & media domain — where ISTJs tend to apply reliable as a structural advantage.