Rhabditida is an order of free-living microbivorous nematodes (roundworms) living in soil.

Genera include:

  • Rhabditis,
  • Caenorhabditis of which C. elegans is the nematode that has had its full genome deciphered,
  • Cruznema,
  • Pelodera,
  • Bursilla (Mesorhabditis),
  • Steinernema,
  • Heterorhabditis.