The conservative, literalist Islamist current known as Salafism is often synonymous with extremism and militancy. In fact, Salafism is an adaptive, diverse and dynamic outlook that has emerged as a major social and political force across the Middle East, especially in the countries of the Arab Maghreb--Mauritania, Morocco, Algeria, Tunisia and Libya--a vitally important region that impacts the security and politics of Europe, sub-Saharan Africa and the broader Middle East. Through extensive interviews and fieldwork, Middle East scholars Frederic Wehrey and Anouar Boukhars explore the many roles and manifestations of Salafism in the Maghreb, to include its relationship with the Maghreb's ruling regimes, with competing Islamist currents, increasingly youthful populations, and communal groups like tribes and ethno-linguistic minorities. Particular attention is paid to how the boundaries between different Salafi currents--pro-regime "quietists," politically active "politicos" who participate in elections, and militant jihadists like al-Qaeda and the Islamic State, is increasingly blurred, demonstrating how seemingly immutable Salafi ideology is often shaped by local contexts and opportunities. Similarly, the authors show how Maghrebi Salafism is uniquely reflective of each country's political institutions, history, and social makeup and how the much-touted notion of Salafism as a monolithic Saudi or Gulf "export" is undermined by local realities. Informed by rigorous research, deep empathy, and unparalleled access to Salafi adherents, clerics, politicians, and militants, Salafism in the Maghreb offers a definitive account of this important Islamist current that is at once granular and accessible.