Geddy Lee Weinrib (/ˈɡɛdi/; born Gary Lee Weinrib, July 29, 1953) is a Canadian musician, best known as the lead vocalist, bassist, and keyboardist for the rock band Rush. Lee joined the band in September 1968 at the request of his childhood friend Alex Lifeson, replacing original bassist and frontman Jeff Jones. Along with Lifeson, Lee is one of the only two members to appear on every Rush album, and he remained in the band until its hiatus, which lasted from 2015 to 2025. Lee's solo effort, My Favourite Headache, was released in 2000.

Lee's style, technique, and skill on the bass have inspired many rock musicians such as Cliff Burton of Metallica; Steve Harris of Iron Maiden; John Myung of Dream Theater; Les Claypool of Primus; Steve Di Giorgio of Sadus, Death and Testament; and Tim Commerford of Rage Against the Machine and Audioslave. Along with his Rush bandmates – guitarist Alex Lifeson and drummer Neil Peart – Lee was made an Officer of the Order of Canada on May 9, 1996. The trio was the first rock band to receive this honor. In 2013, the group was inducted into the Rock and Roll Hall of Fame after 14 years of eligibility. In 2006, Lee was ranked 13th by Hit Parader on their list of the 100 Greatest Heavy Metal Vocalists of All Time. In 2020, Rolling Stone ranked Lee 24th on their list of the 50 greatest bassists of all time

He was born Gary Lee Weinrib on July 29, 1953, in Willowdale, Toronto, to Morris Weinrib (born Moshe Meir Weinrib; 1920–1965) from Ostrowiec Świętokrzyski, Poland; and Mary "Manya" Rubinstein (born Malka Rubinstein; 1925–2021), who was also from Poland: born in Warsaw and later raised in Wierzbnik. His parents were Jewish Holocaust survivors from Poland who had survived the ghetto in Starachowice (where they met), followed by their imprisonments at Auschwitz and later Dachau and Bergen-Belsen concentration camps during the Holocaust and World War II. They were in their teens when they were initially imprisoned at Auschwitz. "It was kind of surreal pre-teen shit", says Lee, describing how his father bribed guards to bring shoes to his mother. After a period, his mother was transferred to Bergen-Belsen and his father to Dachau. When the war ended four years later, and the Allies liberated the camps, Morris set out in search of Manya and found her at a Bergen-Belsen displaced persons camp. They married there and eventually emigrated to Canada.

When Lee started school, his name was incorrectly registered. As a result, Lee grew up thinking his middle name was "Lorne". As a teenager, he saw a copy of his birth certificate and discovered that his middle name was "Lee".

Lee's father died young, which forced Lee's mother to work to support their three children by running the Newmarket, Ontario, variety store that her husband had owned and managed. Lee has suggested that his father's death was probably a factor in his becoming a musician: "It was a terrible blow that I lost him, but the course of my life changed because my mother couldn't control us." He has said that losing his father at such an early age made him aware of how "quickly life can disappear", which inspired him from then on to get the most out of his life and music.

Lee turned his basement into practice space for a band he formed with high school friends. After the band began earning income from small performances at high school shows or other events, he decided to drop out of high school and play rock and roll professionally. His mother was devastated when he gave her the news.

All the shit I put her through, on top of the fact that she just lost her husband. I felt like I had to make sure that it was worth it. I wanted to show her that I was a professional, that I was working hard, and wasn't just a fuckin' lunatic.

Jweekly featured Lee's reflections on his mother's experiences as a refugee and on his own Jewish heritage. Lee's name, Geddy, was derived from his mother's Polish-accented pronunciation of his given first name, Gary. This was picked up by his friends in school, leading Lee to adopt it as his stage name (excising his surname, leaving his middle name as his surname) and later his legal name, Geddy Lee Weinrib (replacing his first name).