A common name for both boys and girls, the meaning of Innis is 'island'. Traditionally, this is an Irish-originated name. 'Inch, meadow, and pasture' are its other meanings. When given as a name, it refers to someone who is an 'island dweller'. Barely used as a first name, it is preferred surname choice. As a surname, Innis is believed to have originated from the Scottish Clan 'Innes'. The Innis family motto is 'Ditat servata fides' which when translated means 'Duty and fidelity enriches'. As a rather ancient name, it is not seen in fashionable use now.