Diagolon refers to a network of Canadian far-right activists formed around a collective of antisemitic streamers. It also refers to a fictional country spanning from Alaska to Florida, envisioned as a tongue-in-cheek symbol for political jurisdictions with fewer COVID-related public health restrictions.

Diagolon’s ideologues espouse antisemitism, Islamophobia, racism, homophobia, and misogyny. The network is influenced by firearms culture, militia movements, and accelerationist movements. Diagolon is represented in a number of symbols, the most prevalent of which is "Ol' Slashy", a black flag with a white diagonal stripe from the top left to the bottom right.