The reason I ask this is that I'm doing a build focused on the Dwarven Fortitude feat.
Whenever you take the Dodge action in combat, you can spend one Hit Die to heal yourself. Roll the die, add your Constitution modifier, and regain a number of hit points equal to the total (minimum of 1).
The Dodge Action
When you take the Dodge action, you focus entirely on avoiding attacks. Until the start of your next turn, any attack roll made against you has disadvantage if you can see the attacker, and you make Dexterity saving throws with advantage. You lose this benefit if you are incapacitated or if your speed drops to O.
I know that normally you can't because you only have one action per turn, but I plan on going into monk for other reasons. I know that taking the Dodge action twice does not give attackers double disadvantage, I'm mostly hoping that I can benefit Dwarven Fortitude multiple times to be a pretty good tank when in combination with a Moon Druid.
Best Answer
Yes, you can
The text you cite is the entire rules text for the Dodge action (p. 192, PHB). There is nothing other than the available number of actions that would limit the Dodge action. No rule states that you can dodge only once per turn. This is not different from taking multiple Attack or Dash actions, which is done more often.
Features that would allow you to take multiple Dodge actions in a turn are for example the fighter's Action surge or the monk's Patient Defense feature that lets you Dodge as a bonus action.
Under normal circumstances, this would not have any benefit, because advantage and disadvantage do not stack, so using multiple actions to dodge would be entirely wasteful. With Dwarven Fortitude, it will allow you to take as many hit die, as you can take dodge actions, as long as you have unused hit die remaining.