Otto Mannlicher was an Austrian firearms designer known for his contributions to rifle development in the late 19th and early 20th centuries. He is best recognized for the Mannlicher rifle, which featured a unique straight-pull bolt action, allowing for faster reloading and improved accuracy. His designs were influential in military and sporting firearms. Mannlicher's work extended beyond rifles; he also developed the Mannlicher–Schönauer rifle, which became popular for hunting due to its reliability and performance. His innovations in firearm design have left a lasting impact on the industry, influencing many subsequent models and manufacturers.