The SMArt 155 is a German 155 mm guided artillery round designed for a long-range, indirect fire top-attack role against armoured vehicles.

The projectile was developed in 1989 by Diehl BGT Defence in Überlingen, Germany, with Rheinmetall and started full-rate production for the German Army in 1998.

[3] SMArt 155 is a 155 mm NATO artillery round designed to be fired from the Panzerhaubitze 2000 and the M109 howitzers, including the Paladin variant.

GIWS formed a partnership with US defence contractor Alliant Techsystems, hoping to sell SMArt 155 to the United States armed forces; As of 2002, no sale had been made.

[3] The US developed the similar M898 SADARM system (which also descended on a ballute to attack the top surfaces of armoured vehicles), but this was discontinued in favour of the GPS guided M982 Excalibur round.

[22] Critics also point out the similar effects of cluster munitions on the civilian population as in the case of unexploded ordnance or mistargeting.