Loss

Loss may refer to:


 * Economic loss
 * Grief, an emotional response to loss
 * Animal loss, grief over the loss of an animal

Mathematics, science, and technology

 * Angular misalignment loss, power loss caused by the deviation from optimum angular alignment
 * Bridging loss, the loss that results when an impedance is connected across a transmission line
 * Coupling loss, the loss that occurs when energy is transferred from one circuit, optical device, or medium to another
 * Insertion loss, the decrease in transmitted signal power resulting from the insertion of a device in a transmission line or optical fiber
 * Dielectric loss, a dielectric material's inherent dissipation of electromagnetic energy
 * Loss function, in statistics, a function representing the cost associated with an event
 * Path loss, the attenuation undergone by an electromagnetic wave in transit from a transmitter to a receiver
 * Free-space path loss, the loss in signal strength that would result if all influences were sufficiently removed having no effect on its propagation
 * Return loss, the ratio of the amplitude of the reflected wave to the amplitude of the incident wave
 * Round-trip loss in laser physics refers to energy lost due to scattering or absorption
 * Switching loss, power loss incured due to circuit switching
 * Lick Observatory Supernova Search (LOSS) program

Albums

 * Loss (Bass Communion album) (2006)
 * Loss (Mull Historical Society album) (2001)

Songs

 * "Losses" (Lil Tjay song) (2020)
 * "Loss", a song by God Is an Astronaut from their self-titled album (2008)
 * "Loss", a song by Madder Mortem from Mercury (1999)
 * "Losses", a song by Drake from Dark Lane Demo Tapes (2020)
 * "Losses", a song by Polo G from Hall of Fame (2021)

Other uses in arts, entertainment, and media

 * "Loss" (comic), a webcomic strip and internet meme
 * Loss (film), a 2008 film by Maris Martinsons
 * Lord Loss (character), a character from Darren Shan's The Demonata
 * "The Loss", a 1990 episode of Star Trek: The Next Generation

Other uses

 * Joe Loss (1909–1990), founder of The Joe Loss Orchestra
 * Loss (baseball), a pitching statistic in baseball
 * League of Secessionist States (LoSS), an intermicronational organisation