is a Scottish professional footballer who plays as an attacking midfielder or forward for Spanish Liga F club Real Madrid CF and the Scotland national team.

She began her career in Scotland with Hibernian, moving to Arsenal aged 18 and spending the next nine years in English football with Bristol Academy, Liverpool and Manchester City, winning four trophies (two FA Women's Cups and two WSL Cups) in her time at City. She joined Real Madrid in 2022, becoming the first Scottish player in the top division of Spanish women's football.

Weir made her full international debut in 2013, and played for Scotland at the UEFA Euro 2017 and 2019 FIFA World Cup tournaments. She also featured for the rarely-assembled Great Britain team at the 2020 Olympic Games (held in 2021).