List of diffuse nebulae

This is a list of diffuse nebulae. Most nebulae are diffuse, meaning they do not have well-defined boundaries. Types of diffuse nebulae include emission nebulae and reflection nebulae.

Emission and reflection nebulae
• Barnard's Loop

• Barnard's Merope Nebula

• Boomerang Nebula

• Bubble Nebula, NGC 7635

• Bubble Nebula in Barnard's Galaxy

• California Nebula

• Carina Nebula

• Cave Nebula

• Corona Australis Molecular Cloud

• Cone Nebula

• Crescent Nebula

• Double Helix Nebula

• Eagle Nebula

• Elephant's Trunk Nebula

• Eta Carinae Nebula

• Flame Nebula

• Fish Head Nebula

• Fly Nebula

• Gum Nebula

• Gabriela Minstral Nebula

• Heart Nebula

• Homunculus Nebula

• Horsehead Nebula

• Hubble's Variable Nebula

• Iris Nebula

• Lagoon Nebula

• North America Nebula

• Omega Nebula

• Orion Nebula

• Pistol Nebula

• Rosette Nebula

• Running Chicken Nebula

• Soul Nebula

• Tarantula Nebula

• Trifid Nebula

• Witch Head Nebula

• Messier 43

• Messier 78, reflection nebula

• NGC 248

• NGC 249

• NGC 256

• NGC 261

• NGC 267

• NGC 281, Pacman Nebula

• NGC 346

• NGC 371

• NGC 588

• NGC 595

• NGC 604

• NGC 1435, reflection nebula in the Pleiades

• NGC 1491

• NGC 1579

• NGC 1714, NGC 1715

• NGC 1788, reflection nebula in Orion

• NGC 1931

• NGC 1973, NGC 1975 and NGC 1977

• NGC 1999, reflection nebula in Orion

• NGC 2014

• NGC 2023

• NGC 2080, Ghost Head Nebula

• NGC 2174

• NGC 2261, variable reflection nebula in Monoceros

• NGC 2736, the Pencil Nebula

• NGC 3576

• NGC 3603

• NGC 6188

• NGC 6193, open cluster with nebulosity in Ara

• NGC 6334

• NGC 6357

• NGC 6559

• NGC 6589, reflection nebula in Sagittarius near NGC 6590 and I 1284

• NGC 6590, reflection nebula

• NGC 6914

• NGC 7129, reflection nebula in Cepheus, near the open cluster NGC 7142

• LBN 7

• LBN 140

• LBN 179

• LBN 206

• LBN 330

• LBN 357

• LBN 084.24-07.79

• LHA 120-N55

• vdB1

• vdB 12

• vdB 13

• vdB 14

• vdB 15

• vdB 16

• IC 349, small reflection nebula in the Pleiades

• IC 2177

• IC 2631, reflection nebula in Chamaeleon

• IC 4604

• IC 4605

• IC 5146

• Sharpless 2-1

• Sharpless 2-112

• Sharpless 2-157

• Sharpless 2-235

• Sharpless 2-297

• N41

• DWB 20

• DWB 169

• DWB 175