The name Aiva means Like A Bird and is of Latin origin. Aiva is a name that's been primarily used for girls.
Originally, the name Ava was the diminutive version of the name Avis.
Ava has been a popular name in the United States starting around 2010. Famous Avas include actress Ava Gardner and director Ava DuVernay. Ava Helen Pauling was a civil rights activist. Ava is also the name of several celebrities' children, including Reese Witherspoon/Ryan Phillippe, Heather Locklear/Richie Sambora, and Hugh Jackman/Deborra-Lee Furness. There is even Saint Ava, a 9th century Roman Catholic nun.
Ava is a common name among soap opera characters, including Ava Benton from All My Children, Ava Jerome from General Hospital, and Ava Peralta on Guiding Light. There is also Ava Moore, a character on the series Nip/Tuck.