• Birthplace: Rochester, New York, USA
• Age: 37
• Height: 165
• Weight: 0
• Website: N/A

Jenna Nicole Mourey, known on YouTube as JennaMarbles, is an American YouTube celebrity, vlogger, comedian & Internet personality and blogger. "Jenna Marbles" is a pseudonym incorporating her dog, Marbles', name. She has several very popular videos, such as "How to Avoid Talking to People You Don't Want to Talk to," which has over 36 million views. She is also known for her video, which perhaps is the video that made her famous titled, "How to trick people into thinking you're good looking," which gained over 5.3 million views in the first week and now has over 67 million views.

Jenna Marbles is one of the most popular YouTube personalities, currently having the 37th most subscribed YouTube channel in the world with over 18 million subscribers and the 15th most subscribed channel from the United States. On top of that, her main channel has over 2.6 billion total video views. She is the most subscribed to woman YouTuber in the United States, and the second most subscribed to woman YouTuber in the world behind Mexican YouTuber, Yuya, as well.

Jenna, under her pseudonym, is also the host of "YouTube 15", a weekly pop countdown on the radio station, SiriusXM Hits 1.