Limpach may refer to several places:

• Limpach, Luxembourg, in the commune of Reckange-sur-Mess
• Limpach (Bodensee), in the district of Bodensee, Baden-Württemberg
• Limpach, Switzerland, in the Canton of Bern
• Limpach (river) that flows down to the Emme river.

• Operation Saturn
• Operation Sawdust
• Operation Sayeed
• Operationsbefehl Hartmut
• Operation Schamil
• Operation Scheduled Departure
• Operation Scherhorn
• Operation Schfifon
• Operation Schneesturm
• Operation Scissors
• Operations conducted by the Mossad
• Operation Scorched Earth
• Operation Scotland I
• Operation Sculpin
• Operations Directorate (Israel)
• Operation Sea Bight
• Operation Seabight
• Operation Seabird
• Operation Seabite
• Operation Sea Bite
• Operation Sea Breeze
• Operation Sea Breeze (Sri Lanka)
• Operation Sea Dragon (Vietnam War)
• Operation Sealion
• Operation sealion order of battle