Meaning and Name Origin
Gabby \g(ab)-by\ as a name for boys is of Hebrew derivation, and the name Gabby means "man of God; my strength is God". Gabby is a variant of Gabriel (Hebrew): from Hebrew gheber "man", or gabar "strong", combined with el "god". A given name for baby boys that is not broadly used.
Gabby has 1 feminine form: Gabrielle.
Gabby is a rare given name for males but a very popular last name for both adults and children (#43735 out of 88799, Top 49%). (2000 U.S. Census)
Shown below is an analysis of the popularity of the boy name Gabby and affiliated names. Popular variation forms of Gabby (#unlisted) rated in the Top 1000 are Gabe, Gabriel (#24 a year ago) and Gay. These boy names reached the peak of their popularity in 2010 and have remained as popular to this day, but with the version Gabe becoming less trendy. Gabriel (#24) is the most fashionable birth name in this compilation. (2014 Birth Statistics)