Securing scholarships for science studies in the US can significantly alleviate the financial burden of pursuing higher education. Here’s a list of twenty prestigious science scholarships available for international students in the USA:

1. Fulbright Foreign Student Program: Administered by the U.S. Department of State, the Fulbright Program provides funding for graduate study, research, and teaching opportunities in various scientific fields.
2. Hubert H. Humphrey Fellowship Program: This fellowship program offers mid-career professionals from designated countries the opportunity to pursue non-degree study and professional development in the United States in fields such as public health, environmental science, and technology policy.
3. American Association of University Women (AAUW) International Fellowships: AAUW offers fellowships to women pursuing full-time graduate or postgraduate study in the United States in fields such as STEM (Science, Technology, Engineering, and Mathematics).
4. Science, Mathematics, and Research for Transformation (SMART) Scholarship for Service Program: The SMART Scholarship provides funding to undergraduate and graduate students pursuing degrees in STEM disciplines, including fields related to national security and defense.
5. National Science Foundation (NSF) Graduate Research Fellowship Program: NSF offers fellowships to graduate students in STEM fields, including engineering, mathematics, and computer science, to support their research and professional development.
6. Google Anita Borg Memorial Scholarship: This scholarship is awarded to women studying computer science, computer engineering, or a closely related technical field at the undergraduate or graduate level.
7. Microsoft Research PhD Fellowship Program: Microsoft Research offers fellowships to PhD students pursuing research in computer science, electrical engineering, or mathematics.
8. IBM PhD Fellowship Awards: IBM offers fellowships to PhD students worldwide pursuing research in computer science, engineering, and other related fields.
9. NASA Internships, Fellowships, and Scholarships: NASA offers a variety of internships, fellowships, and scholarships for undergraduate and graduate students in STEM fields, including aerospace engineering, earth sciences, and astrophysics.
10. Ford Foundation International Fellowships Program: This fellowship program supports individuals from marginalized communities pursuing graduate studies in fields such as science, engineering, and technology.
11. Boren Awards for International Study: Boren Scholarships and Fellowships provide funding to U.S. undergraduate and graduate students to study languages and cultures critical to U.S. national security, including STEM fields.
12. Schwarzman Scholars Program: This program offers fully funded scholarships to graduate students pursuing master’s degrees in global affairs, including concentrations in science and technology, at Tsinghua University in Beijing, China.
13. Hertz Foundation Graduate Fellowship: The Hertz Fellowship provides financial support to exceptional graduate students in applied physical, biological, and engineering sciences.
14. Paul & Daisy Soros Fellowships for New Americans: This fellowship program supports immigrants and children of immigrants pursuing graduate studies in the United States, including STEM fields.
15. Zonta International Amelia Earhart Fellowship: This fellowship is awarded to women pursuing doctoral degrees in aerospace-related sciences or aerospace-related engineering.
16. DAAD Scholarship Programs: The German Academic Exchange Service (DAAD) offers scholarships for international students to study and conduct research in Germany, including STEM fields.
17. Swiss Government Excellence Scholarships: Switzerland offers scholarships to international students for doctoral or postdoctoral research in various fields, including natural sciences and engineering.
18. Australia Awards Scholarships: The Australian government offers scholarships to international students for undergraduate and postgraduate study in fields such as science, technology, and engineering.
19. New Zealand Scholarships: The New Zealand government offers scholarships to international students for undergraduate and postgraduate study in areas such as science, engineering, and technology.
20. Chinese Government Scholarships: China offers scholarships to international students for undergraduate, master’s, and doctoral study in various fields, including science and engineering.

These are just a few examples of science scholarships available for international students in the United States. Prospective applicants should thoroughly research each scholarship program’s eligibility criteria, application requirements, and deadlines to maximize their chances of securing funding for their studies.