• Mortar (weapon) fires shells at a much lower velocity and higher ballistic arc than other ordnance; their shells explode on impact with target.
• Paintball mortar fires paintballs or water balloons filled with paint.
• Mortar (masonry), material used in masonry to fill the gaps between blocks and bind them together.
• Mortar (firestop), hydraulic cementitious material used to firestop through-penetrations in wall and floor assemblies required to have a fire-resistance rating.
• Mortar and pestle, a vessel and implement used to crush or grind materials.
• Mortarboard, a flattened type of headwear normally worn as part of academic dress.

See also

• Chemical mortar battalion