Are you wondering if Vin Diesel is the tallest American actor ever? Well! To resolve this, first, let?s find out how tall is Vin Diesel exactly? According to the prime information on actor superstar Vin Diesel is 6 feet tall. Or, he is 1.82 meters tall. In centimeters, his height is 182 cm. Now, answer to the prior question, ?Is Vin Diesel the tallest American actor?? The answer is NO. According to the history of Hollywood, Matthew McGrory was the tallest one in the entire industry.