By Mrs. Krongkanit Rakcharoen Ambassador of the Kingdom of Thailand to the Lao PDR

To mark this special occasion, Thailand’s Fine Arts Department collaborated with Lao agencies to design a commemorative emblem reflecting the key identities of both nations. The emblem features the golden shower flower or “Ratchaphruek”, Thailand’s national flower, alongside the frangipani or “Dok Champa,” the national flower of Lao PDR. It also depicts Phra That Si Song Rak standing alongside That Luang of Vientiane—two revered monuments symbolizing enduring friendship.

Lao Prime Minister Sonexay Siphandone (R) meets Thai Prime Minister Anutin Charnvirakul in Vientiane on October 16, 2025.

That Luang in Vientiane is a sacred landmark that all visitors to the Lao PDR pay homage to, including the Thai Prime Minister Anutin Charnvirakul during his official visit on 16 October 2025. Phra That Si Song Rak, located in Loei Province, Thailand, was built in 1560 as a testament to royal amity between the Ayutthaya Kingdom under King Maha Chakkraphat and the Lan Xang Kingdom under King Setthathirath. These monuments attest to the deep historical roots of Thai–Lao relations stretching back centuries.

This long-standing bond laid the foundation for the formal establishment of diplomatic relations on 19 December 1950. Since then, ties have been steadily deepened, culminating in their elevation to a “Strategic Partnership for Growth and Sustainable Development” in 2022.

Thailand and the Lao PDR maintain exchanges at all levels, with the Thai Royal Family contributing significantly to the nurturing of bilateral relations. A historic milestone was when His Majesty King Bhumibol Adulyadej the Great, together with the then President Nouhak Phoumsavanh of Lao PDR presided over the opening of the First Thai–Lao Friendship Bridge (Nong Khai–Vientiane). This was followed by His Majesty’s state visit to Lao PDR on 8–9 April 1994 to inaugurate the Huayxone-Huayxua Agricultural Development Service Center (KM 22), a royal initiative modeled after Thailand’s Huai Hong Khrai Royal Development Study Center in Chiang Mai, which continues to operate to this day.

A pivotal moment of the 75th anniversary year took place on 25 December 2025, when His Majesty King Maha Vajiralongkorn Phra Vajiraklaochaoyuhua presided over the opening of the Fifth Thai–Lao Friendship Bridge (Bueng Kan–Bolikhamxay) together with President Thongloun Sisoulith of the Lao PDR. This historic occasion represents a landmark in Thailand–Lao connectivity and friendship, one that will be inscribed in history for generations to come.

Thai–Lao Friendship Bridges: Bridges of Opportunity and Cooperation

The close friendship between Thailand and the Lao PDR is rooted not only in shared language and culture, but also in sustained efforts to enhance cross-border connectivity. Since the opening of the first Friendship Bridge in 1994, four additional bridges have been constructed across the Mekong River: the Second Bridge linking Mukdahan with Savannakhet; the Third one connecting Nakhon Phanom with Khammouane; the Fourth Bridge linking Chiang Rai with Bokeo; and the Fifth connecting Bueng Kan with Bolikhamxay. In addition, fewer people may be aware that Loei Province is home to a Friendship Bridge spanning the Heung River in Tha Li District, directly opposite Xayaboury Province. Though built from cold steel and dusty concrete, the bridges have evolved into living symbols connecting hearts of peoples of the two lands along Mekong River. They facilitate travel, expand trade and investment, and help transform the Thai–Lao border into a zone of opportunity—improving livelihoods, opening economic gateways to the Greater Mekong Subregion, and advancing bilateral relations through a shared vision of connectivity.

Thailand and the Lao PDR share a common border of approximately 1,800 kilometers, more than half of which runs along the Mekong River. In 2024, bilateral trade reached 290 billion baht (8.28 billion USD), 98 percent of which was border trade, making Thailand and the Lao PDR’s largest trading partner. Both countries have set trade target of 350 billion baht (11 billion USD) by 2027. It is proven that the Friendship Bridges have helped facilitate tourism: in 2025 over two million Thai and Lao tourists traveled between the two countries, with a target of three million visitors annually.

Before the bridges were built, crossing the Mekong was far less convenient. Yet the river was never a barrier to human connection, as captured in the classic song “Lam Khong Lam Rak” by Euah Suntornsanan and Thatree — “The Mekong’s banks seem far apart, yet in our hearts they are only an arm’s length away. We see the distance through eyes, yet our hearts drift to one another”.  Seven decades later, the Friendship Bridges have brought the two shores even closer, fostering not only economic exchange but also people-to-people diplomacy.

75 Years of Thailand–Lao PDR: Neighbors and Kin in Spirit

People-to-people ties between Thailand and Lao PDR continue to flourish, buoyed by shared language that often allows communication without interpreters, and a common Buddhist faith that has long connected the two nations. Phra That Phanom in Thailand’s Nakhon Phanom Province has served as a spiritual landmark for Buddhists on both sides of the Mekong for centuries. Likewise, many Thais make pilgrimages to Vientiane to pay homage at That Luang and to That Ing Hang in Savannakhet. Far from dividing the region, in turn, the Mekong River is a sacred link, flowing between communities united by faith and tradition.

Since 2001, drawing on their shared Buddhist heritage, the Ministry of Foreign Affairs of Thailand has regularly organized Royal Kathina Robe Offering ceremonies at temples across the Lao PDR. Similarly, the Lao–Thai Friendship Association has organized Kathina Robe Offering Ceremonies in several provinces of Thailand in order to support and preserve Buddhism and to promote exchanges and visits between the peoples of the two nations. The most recent Royal Kathina Robe Offering ceremony, held on 19 October 2025 at Sunantharam Temple in Savannakhet, was accompanied by a variety of community activities, including Thai–Lao trade fairs, contemporary music performances, youth football training, and free mobile medical services.

In 2025, the Royal Thai Embassy in Vientiane, together with the Consulate-General in Savannakhet and the Lao Ministry of Information, Culture and Tourism, organized a painting competition themed “75 Years of Harmony: Thailand–Laos Relations.” The event was accompanied by the Thai–Lao Cultural Performance: A Celebration of Friendship, showcasing Thai Nora and Fon Lamvong Lao—both recognized by UNESCO as intangible cultural heritage. At the same time, a series of economic seminars held across the Lao PDR forged connections among business communities from both countries, fostering the exchange of expertise and ideas and underscoring the strategic depth and multifaceted strength of Thai–Lao relations.

75 Years of Thailand–Lao PDR: Advancing Toward Sustainable Partnership

Over the past 75 years, Thai–Lao relations have been nurtured and elevated to a partnership of trust, kinship, and shared resilience. This close bond is clearly reflected not only in times of prosperity but also in moments of hardship. During 2024 - 2025, Thailand and the Lao PDR experienced severe flooding caused by Typhoon Yagi, Typhoon Wutip, and Typhoon Wipha, resulting in significant loss of life and damage to property in both countries. Throughout this period, the two nations provided each other mutual support both in-cash and in-kinds. In addition, the Royal Thai Government presented a rescue boat as a symbol of friendship between Thailand and the Lao PDR. These acts of mutual support highlight a shared commitment to stand together, showing that Thai–Lao ties endure through both challenges and moments of lasting achievement.

The 75th anniversary is therefore more than a celebration; it is an opportunity to chart the future of relations for the lasting benefit of people on both sides of the Mekong. Strengthening cooperation in border security remains a key priority, encompassing counter-narcotics efforts, intelligence sharing, joint patrols, the fight against transnational and cybercrime, anti–money laundering measures, and capacity-building to address emerging threats. Alongside this, sustainable alternative development projects— such as support for the Vanmai Coffee Cooperative and Meung Tea Producers Cooperative, aimed at reducing opium cultivation—continue to play a vital role in promoting long-term stability and prosperity.

Against the backdrop of global economic and geopolitical uncertainties, improved logistics connectivity—through roads, railways, and bridges—is emerging as a key driver of shared prosperity. Enhanced infrastructure facilitates border trade and transit transport through the Lao PDR to major markets such as Vietnam and China. To this end, both governments are pressing ahead with major projects, including a new railway bridge across the Mekong linking Nong Khai and Vientiane, slated for completion by 2030, the Sixth Thai–Lao Friendship Bridge between Ubon Ratchathani and Salavan, and upgrades to Route 12, the shortest trade route connecting Thailand to Vietnam, to name just a few.

Environmental cooperation is also gaining momentum. Since 2023, Thailand, the Lao PDR, and Myanmar have worked together under the CLEAR Sky Strategy to address PM2.5 pollution. Building on this framework, Thailand and the Lao PDR are planning joint initiatives to develop air quality monitoring applications, strengthen telemetry networks for early warning systems, and enhance coordinated management of the Mekong River.

As relations move into 2026, Thailand and the Lao PDR are moving forward not only as neighbors, but as strategic partners committed to comprehensive cooperation—strengthening livelihoods, enhancing security, and advancing shared prosperity along the Mekong. This partnership is guided by a simple yet profound principle: “Lao PDR’s security and prosperity are Thailand’s security and prosperity.”

KPL