Siam Umami, Thai Restaurant in South Portland
Royal tradition, local imagination
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Siam Umami - Portland, OR
Elevated Thai Catering
Celebrations feel brighter in Portland
Make your next gathering easy with catering from Siam Umami. Enjoy fresh, flavorful Thai dishes for groups of any size, available for pickup, delivery, or full service.
Party with Style at Siam Umami
A setting made for shared stories
Looking for a private space to celebrate? Our restaurant offers a relaxed atmosphere for special occasions, with full buyouts available for larger events.
Reserve a Table with Ease
Settle in, we’ll hold the moment
Impress your friends, loved ones or out-of-town guests with Royal Thai Cuisine. Creative cocktails, thoughtful service, and a seasonal menu with vegan and gluten-free options make the experience easy. Outdoor seating is available, and peak times can fill quickly. Reserve your table today.
Reserve a tableOrder Thai Dishes Today
South Portland picks, ready to go
Let the next order feel considered, not routine. Khao Mok Gai brings fragrant rice and tender chicken together, while Mahi Mahi Under Blanket offers a refined seafood choice with gentle warmth. Add Pra Rak Long Song for a plant-based option, then finish with Taro Crème Brûlée when sweetness calls. Place your order now.
Order
Apply and Join Our Team
Step into a chef-driven story
New talent is always worth meeting. Siam Umami is built around care, curiosity, and a team spirit that shows in the guest experience. Apply today and help shape what comes next.
Apply for a job
Head Chef Tong, Owner
Embark on a culinary journey through Southeast Asia with Head Chef Tong.
Testimonials
Review by - Google
five star review by Jessica D:
Had a beautiful dinner here with two girl friends. The food is stunning and so delicious. It's really intimate and comfortable, and the service was great. The owner was in and helped us himself, which was a delight. Did I mention how good the food is! Looking forward to going back.
Review by - Google
five star review by Bruce S:
Superior friendly service and superior food. We were a party of five celebrating an adult birthday. After wonderful Hors d'oeuvres and main dishes they served up the birthday cake that we brought with us. We all loved our choices and look forward to our next visit.
Review by - Google
five star review by Eva C:
Wow! So good. Maybe the best shu mai I've ever had. The citrus shrimp salad was fabulous. Hubby had the chicken main course and I had the vegan option. Both very tasty and they aren't afraid of spice. Definitely recommend!
Review by - Google
five star review by Fran H:
I went with family for my birthday, and had an incredible time! Our server was attentive, the drinks were perfect, and we loved the elevated Thai dishes. I had the Khao Mok Gai, and enjoyed every bite. I can't wait to go again!!
Review by - Google
five star review by Tamara M:
Extremely delicious and creative meals! A truly delightful experience for all of the senses. It's clear the chef loves what he does. This is really a hidden gem.
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A Thai Menu Like No Other:
from handcrafted flower dumplings to steak, duck, and thoughtful vegan dishesMake a Reservation in South Waterfront:
beautiful dishes and creative cocktails worth slowing down forPrivate Dining & Full Buyouts:
Birthdays, team dinners, and special occasions in a one-of-a-kind setting
