REUs
American Mathematical Society list of REU sites
Mathematical Association of America list of REU sites
REU in Industrial Mathematics and Statistics Program
Summer programs for women in mathematics
EDGE Program Summer program at Bryn Mawr and Spelman, for women who are applying to graduate programs in mathematics.
Summer Mathematics Program For Women Undergraduates At Carleton and St. Olaf Colleges.
Summer Program for Women in Mathematics At George Washington University.
Internship opportunities
AMS internship and co-op opportunities
INFORMS summer internship service
American Statistical Association
Summer Institute for Training Biostatistics (SIBS)
National Institute of Standards and Technology
Energy Information Administration
Hope College: Statistical Genetics
Joint Program in Survey Methodology
The Interdisciplinary Computational Thinking and Plant Biology Research Program
The Summer Undergraduate Mathematical Science Research Institute (SUMSRI)
FBI Honors Internship Program
Tech-Interns: Undergraduate and Graduate Science and Engineering Internships
Kennedy Space Center Internship Program (KIP) for college undergraduate students
Boeing Internship
Opportunities for undergraduates interested in Statistics