Bring a pot of salted water to a boil and add the orzo pasta.
Cook the orzo according to package instructions until al dente, about 8-10 minutes.
Drain the orzo and rinse under cold water to stop the cooking process.
In a large bowl, combine the cooked orzo with cherry tomatoes, cucumber, bell pepper, and red onion.
Add the crumbled feta cheese and chopped parsley to the bowl.
In a small bowl, whisk together the olive oil and red wine vinegar.
Pour the dressing over the salad and toss to combine.
Season with salt and pepper to taste.
Let the salad sit for 10 minutes to allow flavors to meld.
Serve chilled or at room temperature.