Determining the rarest MBTI (Myers-Briggs Type Indicator) types can be subjective as it depends on various factors such as cultural differences, sample size, and the specific population being studied. However, based on general observations and statistical data, the three rarest MBTI types are often considered to be INFJ, INTJ, and ENTJ.

1. INFJ (Introverted, Intuitive, Feeling, Judging):

INFJs are known as the rarest MBTI type, making up approximately 1-2% of the population. They are often described as empathetic, insightful, and idealistic individuals. INFJs have a strong sense of intuition and are deeply concerned about the well-being of others. They are often driven by their values and strive to make a positive impact on the world.

2. INTJ (Introverted, Intuitive, Thinking, Judging):

INTJs are also considered one of the rarest MBTI types, comprising around 2-4% of the population. They are known for their strategic thinking, logical approach, and independent nature. INTJs are often highly intelligent and have a strong desire for knowledge and understanding. They are natural problem solvers and tend to excel in fields that require analytical thinking.

3. ENTJ (Extraverted, Intuitive, Thinking, Judging):

ENTJs are relatively rare, making up approximately 2-5% of the population. They are characterized by their strong leadership skills, assertiveness, and goal-oriented nature. ENTJs are often highly ambitious and excel in positions that require strategic planning and decision-making. They are known for their ability to organize and mobilize people towards achieving a common goal.

It's important to note that rarity does not necessarily indicate superiority or uniqueness in terms of personality traits. Each MBTI type has its own strengths and weaknesses, and all types contribute to the diversity and complexity of human personalities.