Jennelyn is of Filipino origin, derived from the Spanish name Jennifer. It means "graced by God's favor." The name gained popularity in the Philippines during the mid-20th century, coinciding with the introduction of Western culture and naming practices. Jennelyn has a unique sound, blending the familiar Jen(n) with the less common -elyn ending, giving it a distinctive charm. It is often spelled with one 'n' in its shortened form, Jenelyn. In the Philippines, Jennelyn is typically used as a given name but can also serve as a surname, indicating its integration into local naming traditions.
The name Jennelyn has seen a consistent popularity with five births recorded each year in 2003, 2010, and 2012, totaling fifteen births over these periods combined.