Diamond Bakery Marked 105 Years in Honolulu

The iconic business celebrated over a century of operations with a community event at its Kalihi factory.

Updated on Oct. 13, 2026 in Baking

Diamond Bakery Marked 105 Years in Honolulu

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Diamond Bakery celebrated its 105th anniversary in Kalihi with a special event featuring tours and giveaways. Honolulu Mayor Rick Blangiardi marked the occasion by proclaiming October 12, 2026, as Diamond Bakery Day.

Why it matters

The milestone honors the legacy of three Japanese immigrants who founded the business in 1921. Today, the brand has expanded its footprint to reach customers in Japan and across the U.S. continent.

Diamond Bakery has completed 105 years of operation after being founded in 1921. The limited-edition Founders' Box, featuring items like Coconut Taffy cookies, is available at Longs Drugs and the factory store.

The players

Diamond Bakery

This established bakery business was founded by three Japanese immigrants and has operated for over a century.

Rick Blangiardi

He is the current Mayor of Honolulu who issued an official proclamation recognizing the bakery anniversary.

The details

The anniversary celebration at the Kalihi factory included a traditional kagami biraki sake-barrel ceremony alongside factory tours. Attendees received free treats and participated in promotional giveaways to commemorate the brand history.

Diamond Bakery was founded in 1921.
Diamond Bakery held its 105th anniversary celebration on October 12, 2026.

Culture Shift

The celebration reflects the enduring legacy of family-founded businesses in Hawaii amid shifting modern retail landscapes. It highlights a broader societal preference for preserving local heritage brands that maintain historical ties to their community roots.

Residents can purchase the limited-edition Founders' Box at local Longs Drugs locations or the factory store. The anniversary event also provided the community with an opportunity to tour the historic factory facilities in Kalihi.

The takeaway

Supporting long-standing local businesses preserves community history and unique culinary traditions. Consumers can often find heritage recipes or commemorative products by visiting factory-direct storefronts during anniversary milestones.