In addition to scholarships or awards granted by NKUA for undergraduate or postgraduate studies, there are private and state institutions that offer scholarships (not every year) to foreign undergraduates, graduates, and doctoral students of various subjects.
Make sure that you meet the eligibility criteria and that you note the deadlines of the scholarship(s) you are applying for.
Here is a sample list of the institutions offering scholarships:
• www.iky.gr/en/scholarships/foreign-citizens-eng
• www.eduguide.gr/ypotrofies/prokiryksi/ypotrofies-sylff-se-metaptyxiakoys-kai-didaktorikoys-foithtes-toy-ekpa,2381 (up to 30 years old)
• https://www.minedu.gov.gr/odigos-upotrofiwn
For further study opportunities, check the European Education Area.