Nida may refer to:
- Nida, Lithuania
- Nida (river) in Poland
- Nida (Roman town), an ancient Roman town in the northwestern suburbs of Frankfurt, Germany
- Nida, Świętokrzyskie Voivodeship, Poland
- Eugene Nida, linguistics and translation scholar
- Nida Fazli, Urdu poet and lyricist
- Nida, a character in the computer game Final Fantasy VIII
- Niddah, the Orthodox Jewish laws of family purity
- Typhoon Nida (disambiguation)
NIDA may refer to:
- National Institute of Dramatic Art, Sydney, Australia
- National Institute of Development Administration, a graduate university in Bangkok, Thailand
- National Institute on Drug Abuse, a branch of the National Institutes of Health in the United States
- National Internet Development Agency of Korea
- National Information Communications Technology Development Authority, Cambodia