Sometimes when you get something right in the beginning, there is no need to alter it. The letter “O” is one of those things. It has kept the same shape since 1300BC when it was first adopted into the Phoenician alphabet. This makes the letter O over 3000 years old. While O is the oldest letter in the alphabet, the youngest is the letter J, which was kept from dictionaries by scholars until the late 19th century. This means that the letter J is over 2000 years younger than the letter O.