1. Contemporary organizations
    Nationalist and far-right organizations  Other organizations 

2. Historical organizations

3. Other

Defence League or Defense League may refer to:

Contemporary organizations

Nationalist and far-right organizations

• English Defence League
• Forsyth County Defense League, USA
• Jewish Defense League
• Norwegian Defence League

Other organizations

• Animal Defense League, animal rights organization
• Estonian Defence League, voluntary militarily organized national defence organisation of the Republic of Estonia
• Internet Defense League, a website with the aim of organizing online protests of anti-piracy legislation
• Workers' Defense League, an American socialist organization devoted to promoting labor rights.

Historical organizations

• Airborne and Antigas Defence League, Poland
• Canadian Labour Defence League
• Liberty and Property Defence League, UK
• National-Christian Defense League, Romania
• National Defence League, Australia
• White Defence League, UK

Other

• Youth Defense League, musical group

• Mizue Shisui
• Mizue Takada
• Mizugakiibacter
• Mizugaki (Shinto)
• Mizugami
• Mizuho Athletic Stadium
• Mizuho-class patrol vessel
• Mizuho Habu
• Mizuho Nasukawa
• Mizuho no Kuni
• Mizuho Rugby Stadium
• Mizuho Securities USA Inc.
• Mizu Kagami
• Mizuki Ando
• Mizuki Arai
• Mizuki Castle
• Mizuki Hayashi
• Mizuki Hori
• Mizuki Ichimaru
• Mizuki Itagaki
• Mizuki Kanzaki
• Mizuki Kitaguchi
• Mizuki Matsuda
• Mizuki Tsujimura
• Mizuki Yamashita