H NIZAMUDDIN (NZM) Railway Station, H Nizamuddin Railway station is situated in New Delhi, Delhi. NZM - Frequently Asked Questions. Hazrat Nizamuddin railway station (station code: NZM) is a railway station located in South Delhi, India. Looking for the definition of NZM? Find out what is the full meaning of NZM on Abbreviations. Get NZM : Full Form and its Definition.