GSAS Fellowship Office – funding for research support, language study, multiple-year general support and dissertation-writing support.
https://gsas.harvard.edu/financial-support/fellowships
Harvard Physics List of External Fellowships
https://sites.google.com/a/g.harvard.edu/physics-graduate-student-advisi...
Financial Resources/Tools for Postdoctoral Scholars
https://research.fas.harvard.edu/resources-postdoctoral-scholars
APS List of Internships and Fellowships
https://www.aps.org/careers/employment/internships.cfm
Non-APS Scholarships and Fellowships - list of other scholarships, fellowships, and internships for minorities, women, and general students
https://www.aps.org/programs/education/scholarships.cfm
APS Scholarships and Awards
https://www.aps.org/programs/women/scholarships/
Scholarship Search Engines
Fastweb: https://www.fastweb.com/
Financial Aid: https://finaid.org/scholarships/