The court dismissed an appeal to lift the ban, a move likely to heighten tensions between the Muslim Brotherhood and the interim government, Ahram Online reported.
The Muslim Brotherhood, Egypt's largest Islamist organization, was banned Sept. 23, its assets seized and all institutions linked to the movement outlawed, the Egyptian news website said.
Responding to the court decision, the Muslim Brotherhood criticized the ruling, calling it "politically motivated" and an attempt by military rulers to stifle dissent, the website said.
Since longtime Brotherhood member Mohamed Morsi's removal from power July 3, the Muslim Brotherhood has faced a fierce crackdown, with hundreds of its members killed and thousands arrested, the report said.
2014: The Year in Music [PHOTOS]