Glaucidium may refer to:

• Glaucidium (owl), the genus of pygmy owls
• Glaucidium (plant), a genus of plants in the family Ranunculaceae

• Janetogalathea californiensis
• Janet Paisley
• Janet Parshall's America
• Janet Paterson Frame
• Janet Paterson Frame, ONZ, CBE
• Janet Pavek
• Janet periodic table
• Janet Perlman
• Janet Perr
• Janet Pilgrim
• Janet Pilgrim (army medic)
• Janet Pilgrim (British Army officer)
• Janet Pilgrim (disambiguation)
• Janet Podleski
• Janet Price
• Janet Raduenzel
• Janet Radünzel
• Janet Ramsay Johnson
• Janet Ramsey Johnson
• Janet Read Kiehel Roberts
• Jane Trefusis Forbes
• Jane Tregunno
• Janet. Remixed
• Janet Richards (Egyptologist)
• Janet Riggs