Spintharus berniesandersi is a species of Spintharus ("smiley-faced spiders") in the family Theridiidae. It is endemic to Cuba.
It was described in 2018 by academics at the University of Vermont. This revision is in contrast to Herbert Walter Levi's taxonomy, which considered it to be intraspecific variation within Spintharus flavidus.
The spider is named after United States Senator Bernie Sanders.