Brain Tumor Awareness Month or Brain Cancer Awareness Month is observed each March in the UK, and every May in Canada, Australia and the United States.
Brain Tumor Awareness Month began in March 2004, predominantly in the United Kingdom, and was founded by a group of brain tumor charities. The United States first observed Brain Tumor Awareness Month in May 2008.
Gray ribbons are used to raise awareness of brain tumors including brain cancers. A one minute silence is held on 11am on the first Monday of March in the United Kingdom.
Several organisations encourage people wear gray clothes for "Turn May Grey".
In the UK, Wear a Hat Day typically takes place on March 31.
Fundraising walks, races and other events took place throughout the month.
Glioblastoma Awareness Day began in the United States on July 17, 2019, the year after politician John McCain died from Glioblastoma.