Giannah has been given to about 623 people in the United States since 1880. It was most common in 2021, which makes it a current name.
Its best year was 2021, when 45 babies were given the name, ranking 3459th. The typical living American called Giannah is about 10 years old today. It is relatively most common in Texas, where it accounts for 0.00% of births.
Source: US Social Security Administration, national and state name files, 2025 release, and the Office for National Statistics for England and Wales. Etymology researched and written by our editors. Living-population and median-age figures are our own estimates, described in the methodology.