What are some of the most well-known/popular student organizations at UT?
There are 1,165 to choose from. “Popular” doesn’t really have context at a University of this size. Popularity ceases to be much of an influence in life after high school - thank goodness.
Can you specify what you are looking for? There really isn’t anything that may be “popular” across the entire campus other than Greek life, but there are some that are more popular than others within student communities
If you meant in terms of well known due to campus advertising, some examples are:
China Care has an annual benefit concert for orphans’ medical needs.
Various Greeks host events or talent shows like Jade Ribbon pageant, UNITY show, etc.
Campus E+E is Events and Entertainment and they host stuff for students every few(?) weeks.
Quidditch team is 3-time national champions.
The Daily Texan is the student newspaper.
The Christian student org would also fall into the “immense campus advertising” category (lol orientation). All jokes aside, I’m also interested in OP’s question. Quidditch is definitely a huge one, and I’m personally hoping to join The Daily Texan.