Rinse the rice in a mesh strainer for about 2 minutes to remove extra starch. Give it a good shake to get out as much water as possible.
Add the rinsed rice and water into the Instant Pot. Make sure to cover and turn the valve to sealing.
Set the Instant Pot to the rice setting or manual high pressure for 12 minutes. Allow the rice to do a natural release for 5 minutes, then open the valve to release any leftover steam.
Once the lid is off, pour the rice vinegar over the cooked rice. Use a wooden spatula to gently chop and mix, spreading out the vinegar without smashing the rice. Serve the sushi rice as needed.