There is no definitive answer to this question as it is subjective. However, based on various reports and observations, it is generally agreed upon that the player with the smallest hands in the NBA is Isaiah Thomas of the Boston Celtics. Standing at just 5â€™9â€, Thomas has extremely small hands for a professional basketball player which gives him a significant disadvantage when it comes to gripping and controlling the ball. This was evident during his time with the Sacramento Kings where he struggled with turnovers due to his lack of hand size. While he has managed to overcome this issue to some extent by developing better ball-handling skills, it still remains a weakness that opposing teams look to exploit.