Aks in Urdu means reflection, and may refer to:
- Aks (film), a Bollywood movie released in 2001
- Aks (album), a music album released by Lucky Ali in 2000
In other contexts, aks may refer to:
- Aks 13000, or Aks 13, part of the Norwegian resistance movement in World War II
- "Aks," a metathesis of "ask" in African American Vernacular English
As an abbreviation, AKS may refer to:
- AKS, the United States Navy hull classification symbol for "general stores issue ship"; see also Stores ship
- AKS Inc, a propeller manufacturer
- AKS Co., Ltd. (株式会社AKS, Kabushiki Gaisha Ei Kei Esu?), AKB48's talent agency
- AKS, the United States Navy abbreviation for "general stores issue ship"
- The AKS-47 variant of the AK-47 assault rifle
- The AKS primality test, a deterministic primality-proving algorithm
- In card-playing, "Ace-King suited", also known in Texas Hold 'Em by the nickname "Big Slick"; see "Ace higher card" at List of playing-card nicknames#Texas hold 'em pocket card nicknames
- The Academic Karelia Society, a Finnish elitist nationalist and Finno-Ugric activist organization active from 1922 to 1944
- The Academy of Korean Studies a South Korean research and educational institute which conducts deep research on Korean culture
- The Ajtai–Komlós–Szemerédi sorting network, an abstract mathematical model of a network of wires and comparator modules that is used to sort a sequence of numbers
- AK Steel Holding Company, an S&P 500 (NYSE:AKS) steel manufacturer based in the United States
- EMS Synthi AKS, an analog synthesizer
- Politiets Aktionsstyrke, a Danish special-task police force