1,802 Theory Icons

Browse & download free and premium 1,802 Theory Icons in

• line, 
• colored outline, 
• flat, 
• rounded, 
• glyph, 
• dual tone, 
• gradient, 
• doodle, 
• isometric

design styles for web or mobile (iOS and Android) design, marketing, or developer projects. These royalty-free high-quality Theory Icons are available in SVG, PNG, EPS, ICO, ICNS, AI, or PDF and are available as individual or icon packs.. You can also customize them to match your brand and color palette! Don’t forget to check out our exclusive, popular, latest, and featured icons too! Don’t forget to check out our

• Theory 3D Icons, 
• Theory Animations, 
• Theory Illustrations, 

too.