Agricultural machinery is a mechanical device (including tractors and other technical equipment) used in agriculture for labour-saving processes. Agricultural machines include a wide variety of devices with a wide range of complexity: from simple hand guns, used from prehistoric times to the complex harvesters of modern mechanized agriculture.

Operations of farming for which machines are used are diverse.
In particular, for crop production they include:
 the treatment of residues from previous crops;
 primary and secondary tillage;
 distribution and use of fertilizers for crops and their planting and transplanting;
 cultivation;
 pest control;
 harvesting; transportation;
 storage area;
 pre-treatment;
 drainage;
 control irrigation and erosion and, as a result, the preservation of water resources.
Livestock, which not long ago was dependent, first of all, from forks and spades, now uses a variety of complex and high-tech machines for the processing of water, feed, bedding and manure, as well as many specialized operations associated with the production of milk and eggs.