Jenna Nicole Mourey (born September 15, 1986), known on YouTube as JennaMarbles, is an American YouTube celebrity, vlogger, comedian & Internet personality. "Jenna Marbles" is a pseudonym incorporating her dog, Marbles', name. She is currently the 11th most subscribed channel. She has several very popular videos, including "How to Avoid Talking to People You Don't Want to Talk to," which has over 32 million views. She is also known for her video "How to trick people into thinking you're good looking," which had over 5.3 million views in the first week and now has over 57 million views. She has three dogs, Kermit, Peach, (both Italian greyhounds) and Marbles (a chihuahua). They appear in most of the videos she has made, often at the end, when she mimes them saying, "Make sure you subscribe to our channel! We put out new videos every Wednesday!"

Jenna Marbles is the 11th most Subscribed YouTube Channel in the world. and the 6th most subscribed from the United States.