Cut salmon into 1-inch cubes, removing any pin bones and skin if preferred.
Whisk coconut aminos, honey, rice vinegar, garlic, sesame oil, ginger, sriracha, salt, and pepper in a medium bowl.
Add salmon cubes to the bowl and toss gently to coat. Marinate for 10 minutes at room temperature.
Preheat the air fryer to 400°F for 3 minutes.
Spray the air fryer basket with oil or line with parchment paper liners.
Arrange salmon in a single layer in the basket, leaving space between pieces.
Air fry for 8–10 minutes, shaking the basket gently at the 5-minute mark.
Check with an instant-read thermometer; internal temperature should reach 125°F for medium doneness.
Remove with tongs and serve immediately.