Lagunitas or Lagunita may refer to:

• Lagunitas, California, an unincorporated community in Marin County
• Lagunitas-Forest Knolls, California, a census-designated place in Marin County
• Lagunitas Brewing Company, a brewery founded in Lagunitas, California
• Lagunitas Creek, in Marin County, California
• Lake Lagunitas, a reservoir on Lagunitas Creek
• Lagunita, an ancient Mayan city
• Lake Lagunita, a dry artificial lake on the Stanford University campus in California
• Lagunitas Formation (disambiguation), several geological formations

• Laguna (disambiguation)
• Lagunas (disambiguation)