| NIEDDU, G., Topologia delle terme romane in Sardegna. Rapporti con l’Africa, in: A. MASTINO (ed.), L’Africa romana. Vol. 5, Sassari, 11-13 dicembre 1987, Sassari 1988, 439-452, ill. | | | |
| NIELSEN, I., Amphitheatrum, in: H. CANCIK, H. SCHNEIDER (eds.), Der Neue Pauly 1, Stuttgart/Weimar 1996, 619–624 | | | |
| NIELSEN, I., Bäder, in: H. CANCIK, H. SCHNEIDER (eds.), Der Neue Pauly 2, Stuttgart/Weimar 1997, 397–400, ill. | | | |
| NIELSEN, I., Circus (I. Architektur), in: H. CANCIK, H. SCHNEIDER (eds.), Der Neue Pauly 2, Stuttgart/Weimar 1997, 1210–1214 | | | |
| NIELSEN, I., Early Provincial Baths and their Relations to Early Italic Baths, in: J. DELAINE, D. E. JOHNSTON (eds.), Roman Baths and Bathing I: Bathing and Society. Proceedings of the First International Conference on Roman Baths Held at Bath, England, 30 March – 4 April 1992, Portsmouth 1999, 35–43, ill. | | | NIELSEN, I., Early Provincial Baths and their Relations to Early Italic Baths, in: J. DELAINE, D. E. JOHNSTON (eds.), Roman Baths and Bathing I: Bathing and Society. Proceedings of the First International Conference on Roman Baths Held at Bath, England, 30 March – 4 April 1992, Portsmouth 1999, 35–43, ill. |
| NIELSEN, I., Kolosseum, in: H. CANCIK, H. SCHNEIDER (eds.), Der Neue Pauly 6, Stuttgart/Weimar 1999, 668–670 | | | |
| NIELSEN, I., Meta [B], in: H. CANCIK, H. SCHNEIDER (eds.), Der Neue Pauly 8, Stuttgart/Weimar 2000, 66 | | | |
| NIELSEN, I., Piscina [2], in: H. CANCIK, H. SCHNEIDER (eds.), Der Neue Pauly 9, Stuttgart/Weimar 2000, 1042 | | | |
| NIELSEN, I., Thermae et balnea, Aarhus 1990 | | | |
| NIELSEN, J., Thermen, in: H. CANCIK, H. SCHNEIDER (eds.), Der Neue Pauly 12/1, Stuttgart/Weimar 2002, 414–422 | | | |
| Nielsen, T. H., “When Zeus Gave me Victory …” - a note on Inschriften von Olympia 166, in: Nikephoros 25, 2012, 155-158 | | | |
| Nielsen, T. H., A Note on ‘The Hellenic League against Persia’ and the Sanctuary of Zeus at Nemea, in: Classica et Mediaevalia 58, 2007 165–178 | | | |
| Nielsen, T. H., An Essay on the Extent and Significance of the Greek Athletic Culture in the Classical Period, in: Proceedings of the Danish Institute at Athens 7, 2014, 11-35 | | | |
| Nielsen, T. H., Athletics in late-archaic and classical Arkadia, in: K. Tausend (ed.), Arkadien im Altertum. Geschichte und Kultur einer antiken Gebirgslandschaft, Graz 2018, 407-440 | | | |
| NIELSEN, T. H., Olympia and the Classical Hellenic City-state Culture (Historisk-filosofiske Meddelelser 96), Kopenhagen 2007, 139 p. | | | |
| Nielsen, T. H., Olympia som et panhellensk sportscentrum, in: Aigis 12.2, 2012, online publication | | | |
| Nielsen, T. H., Panhellenic Athletics at Olympia, in: P. Christesen and D. G. Kyle (eds.), A Companion to Sport and Spectacle in Greek and Roman Antiquity, Chichester 2014, 133-145 | | | |
| Nielsen, T. H., Reflections on the Number of Athletic Festivals in Pre-Hellenistic Greece, in: C. Mann, S. Remijsen and S. Scharff (eds.), Athletics in the Hellenistic World, Stuttgart 2016, 31-41 | | | |
| Nielsen, T. H., Sportskulturens omfang i det klassiske Grækenland, in: Aigis 10.2, 2010, 1-40 | | | |
| NIELSEN, Th.H.: A Note on the Number of Events in Classical Greek Athletics. Nikephoros 29 (2023) 215–223 | | | |
| NIELSEN, Th.H.: En note om antallet af antikke græske sportsgrene, 2022. Aigis: nordisk tidsskrift for klassiske studier 22,1 (2022) 1–10 | | | |
| NIELSEN, Th.H.: En note om dateringen af Damarchos fra Parrhasiens olympiske sejr. Aigis: nordisk tidsskrift for klassiske studier 22,1 (2022) 1–3 | | | |
| NIELSEN, Th.H.: Klassisk græsk sport som underholdning, in: Under¬holdning i antikken og middelalderen, edited by T. Svendrup. Egå 2022, 7–32 | | | |
| NIELSEN, Th.H.: On the politics of inclusion and exclusion in classical Greek sport (479–323 BC). Rosetta. Papers of the Department of Classics, Ancient History and Archaeology at the University of Birmingham 27 (2022) 71–100 | | | |
| NIELSEN, Th.H.: On the Pursuit of Athletic Glory by the poleis of Late-Archaic and Classical Greece, in: Money and Honour in Ancient Athletics, edited by Ch. Begass, Ch. Mann and M. Tentori Montalto. Wiesbaden 2023, 25–58 | | | |
