Ursina can refer to:

• 860 Ursina, a minor planet orbiting the Sun.
• Ursina, Pennsylvania, a borough in Somerset County, Pennsylvania, United States.
• Vrsno, Kobarid, a village in western Slovenia, named Ursina in Italian

• Baykitsky District
• Baykonurian glaciation
• Baykonyr (Martian crater)
• Baykova
• Baylake Corp
• Bay Lake, Minnesota
• Baylan
• Baylander (IX-514)
• Baylands Nature Preserve
• Baylark, Steve
• Bayla Wegier
• Bayla Węgier
• Bayleaf, North Carolina
• Baylebridge, William
• Baylee Littrell
• Bayleigh Dayton
• Bayless Hanna
• Bayless Quarters
• Bayles (surname)
• Bayless Washington Hanna
• Bayles, William
• Bayley Currey
• Bayley, Edward
• Bayley Fritsch
• Bayley Historic District