Meaning and name origin
Jen \jen\ as a girl's name is of Welsh and English origin, and the meaning of Jen is "fair and smooth". Jen is a variant of Guinevere (Welsh): an early form of Jennifer. Also a variant of Jenny (English): originally a pet form of Jean in the Middle Ages; now used as a short form of Jennifer.
Jen is a somewhat popular first name for females (#2986 out of 4276, Top 70%) and an even more popular surname or last name for all people (#23726 out of 88799, Top 27%) (2000 U.S. Census).
Displayed below is a comparison of the popularity of the girl name Jen and its variant forms. Popular variation forms ranked in the Top 1000/100 are Jennifer (#220) and Jenny (#822). (2014 statistics).
Jen is also pronounced similarly to Gene, Jan, Jane, Jann, Jean, Jeane, Joan, Jone and June. Other suggested similar baby names are Jaena, Jana, Jany, Je-, Jeana, Jeena, Jeh, Jena, Jenae, Jenai, Jenay, Jenee, Jeni, Jenie, Jenna, Jenni, Jey, Jina, Jona, Joni, Juno and Pen. These names tend to be less commonly used than Jen.