r/ISTJ

14K archived posts · Jun 2011 – Sep 2026

ISTJ

r/ISTJ

ISTJ is a personality type from the Myers-Briggs Type Indicator. Known for integrity, loyalty, and responsibility, the ISTJ values efficiency and order.

Created Aug 16, 2009

26KMembers (last snapshot)

14KArchived posts

Introverted Sensing Thinking Judging

Welcome to r/ISTJ! This SubReddit is open to all MBTI types! You can choose a flair to show us your type.

ISTJ Links

ISTJ Personality Profile - A good description of the ISTJ type, with attributed strengths, weaknesses, and a list of famous ISTJs.

Myers-Briggs Type Indicator - The official website of the MBTI.

Free MBTI Personality Test - A free MBTI test to help you determine your type.

Big 5 Personality Test - A reputed personality test to help you determine your scores on Extroversion, Conscientiousness, Agreeableness, Neuroticism, and Open-Mindedness.

Additional Material

Criticisms of the MBTI - An article in The Guardian about some of the issues with MBTI

Susan Cain - The Power of Introverts - A TED talk on the power of introverts.

Other MBTI Types

MBTI in General - MBTI

SJ "Guardians" - ESFJ | ISFJ | ESTJ | ISTJ

NT "Rationals" - ENTP | INTP | ENTJ | INTJ

NF "Idealists" - ENFP | INFP | ENFJ | INFJ

SP "Artisans" - ESFP | ISFP | ESTP | ISTP

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