Other

• Larsen & Toubro
  Larsen & Toubro
  Larsen & Toubro Limited is an Indian multinational conglomerate company headquartered in Mumbai, India. The company has four main business sectors: technology, engineering, construction and manufacturing. L&T has an international presence, with a global spread of offices and factories, further...
  
  , an Indian engineering and construction conglomerate
• Larsen Bay, in Alaska
• Larsen Channel
  Larsen Channel
  Larsen Channel is a strait 1 to 3 miles wide between D'Urville Island and Joinville Island, off the northeastern end of the Antarctic Peninsula. Larsen Channel was discovered in 1902 by the Swedish Antarctic Expedition under Otto Nordenskiöld and named for Captain C. A. Larsen of the expedition...
  
  , in Antarctica
• Larsen effect, special kind of feedback which occurs when a loop exists between an audio input and an audio output
• Larsen Ice Shelf
  Larsen Ice Shelf
  The Larsen Ice Shelf is a long, fringing ice shelf in the northwest part of the Weddell Sea, extending along the east coast of Antarctic Peninsula from Cape Longing to the area just southward of Hearst Island...
  
  , in Antarctica
• Larsen Islands
  Larsen Islands
  The Larsen Islands or C. A. Larsen are a small group of islands lying 1 mile northwest of Moreton Point, the western extremity of Coronation Island, in the South Orkney Islands. The Larsen Islands are located at . The Larsen Islands were discovered by Captain George Powell and Captain Nathaniel...
  
  , in Antarctica