The data set comprises N2O (nitrous ocide) data of the Earth's upper troposphere and middle atmosphere region for the years 2002-2012 as derived from MIPAS on Envisat and retrieved with the IMK/IAA level-2 processor. The MIPAS observation modes FR (2002 - 2004, N2O_61), RR-NOM (2005 - 2012, N2O_261), RR-UTLS-1 (2005 - 2007, N2O_161), RR-MA (2005 - 2012, N2O_561 & N2O_562), and RR-UA (2005-2012, N2O_662) are covered. Data versions N2O_161, N2O_261, and N2O_561 are compatible and could be used together. The same holds for data versions N2O_562 and N2O_662. The data is based on version V8 infrared spectra.