Mattress was the term applied to ground-based British-devised multiple rocket launchers during World War II.

Compared with the German and Soviet counterparts (the Nebelwerfer and Katyusha launchers respectively), the western Allies deployed these weapons late in the war.

Nevertheless, they did see useful service as artillery support during the crossings of the Rhine and the Scheldt rivers.

The so-called land mattress was a ground weapon named after its naval equivalent.

The Land Mattress was based on the 3-inch-diameter (76 mm) tube of the RP-3 or "60-lb" rocket used as an air-to-ground weapon with naval 5-inch shells as warheads and consisted of a 16- or 30-tube launchering system mounted on a towed carriage.