The term anti-orthodox may refer to criticism or animosity towards any orthodox notion (religious, political, ideological, cultural, artistic).
Heterodoxy specifically refers to any opinions or doctrines which are at variance with an official or orthodox position in religious or non-religious usage.
The capitalized term anti-Orthodox may also refer to:
- The Anti-Eastern Orthodox sentiment, negative sentiments and animosities towards Eastern Orthodox Christianity
- The Anti-Oriental Orthodox sentiment, negative sentiments and animosities towards Oriental Orthodox Christianity
- The Criticism of Orthodox Judaism