Icarus - Icarus was a Greek god who flew too close to the sun. He had wax wings which melted causing him to fall into the sea and drown. He is seen to represent the impetuous and uncontrolled nature of youth.
Iguana - Iguanas are brightly colored lizards and as a result look great as tattoos. They can be tattooed to full size on the back or smaller on the calf of a leg or shoulder. Iguanas were considered to be sacred animals by the Mayan.
Illuminati - The illuminati were a secret organization of 'adepts' or enlightened ones with extraordinary power. There are many conspiracies surrounding them and many claim that the American dollar bills contain illuminati symbolism which is the eye in the triangle or 'all-seeing eye'. In tattoos there are many variations of this symbol as there are many different reasons for getting it.
Infinity - The infinity symbol looks like a number eight lying on its side as is an ancient Arabic symbol. Many people get this as a tattoo to represent the eternal nature of the soul.
In Memoriam - These are constant reminders of a deceased person that are popular tattoos for those who want to remember loved ones who have passed. They are usually tattooed with a portrait of the person who has passed.
Isis - Is an ancient Egyptian goddess and a popular choice for a tattoo. She is generally shown holding a staff to represent her control.