McKenna \m(c)-kenna, mck(en)-na\ as a girl's name (also used as boy's name McKenna), is pronounced ma-KEN-ah. It is of Scottish and Gaelic origin, and the meaning of McKenna is "ascend". From the Gaelic word "eirghe". Popular use of this surname as a given name is influenced by the similar use of Mckenzie.
McKenna has 2 variant forms: Mackendra and MacKenna.
For more information, see also the related name Makena.