Alexa may refer to:

Technology

• Amazon Alexa, a virtual assistant developed by Amazon

• Alexa Internet, a defunct website ranking and traffic analysis service

• Alexa Fluor, a family of fluorescent dyes

• Arri Alexa, a digital motion picture camera

People

• Alexa (name), a given name and surname

• AleXa, American pop singer based in South Korea

Other uses

• Alexa (plant), a genus of legumes

• Alexa (typeface), a typeface

• 2013 Middle East cold snap, also referred to as Alexa

• One Night's Intoxication, a 1951 German film released in Austria as Alexa