• Serenity (software), an open source web server project
• Serenity (porn star), an adult video actress

In music, Serenity may refer to:

• Serenity (Blood for Blood album), the seventh studio album by Blood for Blood
• Serenity (Culture Beat album), the second album by Culture Beat
• Serenity (band), an Austrian Progressive metal band
• Serenity (song), a hard rock song by Godsmack
• Serenity (soundtrack), the soundtrack to the 2005 film

In popular culture, Serenity may refer to any of various topics related to Firefly, a U.S. television series, or its Firefly (TV series) spin-offs, particularly:

• "Serenity" (Firefly episode), the TV series pilot
• Serenity (film), the 2005 film
• Serenity (Firefly vessel), the spaceship
• Serenity (role-playing game), the role-playing game

See also

• Serenity Prayer
• Serenity Virtual Station, a software product from Serenity Systems International
• Crystal Serenity, a cruise ship for Crystal Cruises
• Princess Serenity, the protagonist and title character of the metaseries known as Sailor Moon
• Passaddhi, Buddhist enlightenment factor