Otto is a Germanic name derived from the element aud and means "wealth" or "fortune". It was the name of four Holy Roman Emperors and of Otto von Bismarck, and it was a top 100 name in the United States in the late 19th century, when German immigration was at its height. Like Arthur and Walter it has returned with the vintage revival: Otto re-entered the US top 1000 in 2011, rose from number 544 in 2015 to a peak of number 274 in 2024 and ranks number 277 among boys' names in 2025.