Mckennah is a unique, unisex given name of Scottish origin. It is derived from the Gaelic word "Cionaoth," which means "wisdom" or "understanding." The name was popularized in the United States during the 1980s and 1990s but has since declined in usage, making it a rarity today. In its most common spelling, Mckennah is pronounced /məˈkɛnə/ with emphasis on the second syllable. It can also be spelled as McKannah or McKenna, although these variations are less common.
The name Mckennah has seen a peak in popularity between the years 1998 and 2007, with the highest number of births occurring in 1999 (31 births) and 2007 (31 births). However, there seems to be a consistent decline in its usage since then, with only 6 births recorded in 2023. Overall, from 1992 to 2023, the name Mckennah has been given to a total of 521 newborns.