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About Us

"Bringing Mexican favorites to Lake Ronkonkoma daily."

From Humble Beginnings to a Local Favorite

Guac Island Mexican Grill started with a simple goal: to serve fresh, quality Mexican-inspired meals in a welcoming space. Since opening in Lake Ronkonkoma, we’ve grown into a community favorite, known for consistency and care in every dish. Our journey is about more than food—it’s about creating a place where everyone feels at home. We strive to keep authenticity at the heart of everything we do.
Fresh Ingredients, Bold Flavors

Fresh Ingredients, Bold Flavors

Every dish at Guac Island Mexican Grill is crafted with fresh, locally sourced ingredients for flavor in every bite. From hearty burritos and Birria tacos to lighter keto salads, quesadillas, loaded fries, and nacho chips with guacamole, our menu suits every appetite. Each order is prepared with care and attention to detail, making it easy to enjoy a satisfying meal in the restaurant or at home.
More Than a Meal: A Place to Connect

More Than a Meal: A Place to Connect

What makes Guac Island Mexican Grill special is the community we serve. Our guests aren’t just customers—they’re part of our extended family. We take pride in providing a friendly, welcoming environment where people can gather, celebrate, or simply enjoy a good meal. Choosing Guac Island means choosing freshness, convenience, and a local spot that truly cares.

Visit Us Today or Order Online!

Open daily from 11 AM to 3 AM, Guac Island Mexican Grill is ready whenever hunger calls. Enjoy dine-in for the full experience, or order delivery or takeout for convenience. Catering brings fresh, flavorful meals to any event. With a welcoming space and versatile menu, we make enjoying authentic Mexican cuisine simple, fresh, and satisfying every time.