Dodge bonus

A Dodge bonus is a bonus to AC. Note that dodge bonuses stack with each other, contrary to most other AC bonus types.

Source of dodge bonuses:
 * Feats
 * Combat expertise +5 (also gives a -5 penalty to attack rolls)
 * Defensive fighting +2 (also gives -4 to hit)
 * Dodge +1
 * Mobility +4 (only while tumbling)
 * Uncanny dodge +4 (rogue and barbarian only)
 * Improved uncanny dodge +6 (rogue and barbarian only)
 * Sunder -4 (decreases AC for 12 seconds; usually only used on monsters)
 * Improved Sunder -5 (decreases AC for 24 seconds; usually only used on monsters)
 * Enhancements:
 * Favoured Defense I to III +2-4 (Ranger only, vs. favoured enemies)
 * Fighter's Dodge +1 (fighter only, requires Dodge feat)
 * Fighter's Combat Expertise I to II +2-4 (fighter only, requires Combat expertise feat, increases attack roll penalty for Combat Expertise to -7 or -9)
 * Fighter's Mobility I to II +1-2 (fighter only, only while tumbling; requires Mobility feat)
 * Giant Dodger I +4 vs. attacks from giant-type creatures (dwarf only)
 * Items:
 * Chaosgarde bracers +2 (lawful alignment only, from Xorian Cipher)
 * Racial:
 * Dwarf +4 vs. attacks from giant-type creatures (dwarf only)
 * Spells:
 * Haste +1

Other common bonuses to your armor class are armor bonus, shield bonus, deflection bonus, dexterity bonus, natural armor bonus, and miscellaneous bonus.