State Visit · Japan–Belgium

Emperor Naruhito and Empress Masako arrive in Belgium for state visit with King Philippe and Queen Mathilde

Emperor Naruhito and Empress Masako of Japan are in Belgium on an official state visit, received at the Royal Palace by King Philippe and Queen Mathilde — a rare Imperial visit marking 160 years of Japan-Belgium diplomatic relations and signalling Japan's continued alignment with EU and NATO at a moment of heightened global tension.

Belgium Impulse Editorial·23 June 2026·3 min read·3 sources

Key signal

A state visit by the reigning Japanese Emperor is among the rarest and most significant diplomatic events in bilateral relations. Emperor Naruhito is head of state of the world's third-largest economy and 126th Emperor of Japan. His presence in Brussels — seat of both the EU and NATO — signals Japan's deepening alignment with European multilateral institutions and echoes shared concerns over Russia's war in Ukraine and Indo-Pacific security. For Belgium, the visit affirms its role as the diplomatic capital of Europe.

Key facts

01Emperor Naruhito, 65, is the 126th Emperor of Japan. He ascended to the Chrysanthemum Throne on 1 May 2019 following his father Akihito's abdication — the first Japanese Imperial abdication in approximately 200 years.
02Empress Masako, 62, is a former diplomat with Japan's Foreign Ministry. She holds a BA in economics from Harvard and studied European public law at Oxford. She speaks English, French and German.
03Japan and Belgium established diplomatic relations in 1866 — among the earliest that Meiji-era Japan formed with European nations.
04Japan is Belgium's largest non-EU Asian trading partner. Bilateral trade is estimated at over 4 billion euros annually.
05Belgium hosts the EU institutions and NATO headquarters, making it the most diplomatically significant European capital for Japan's engagement with Western multilateral structures.
06The Japan-EU Economic Partnership Agreement (EPA), in force since 2021, has progressively eliminated tariffs across most goods categories between Japan and EU member states.
07Emperor Naruhito studied at Oxford's Merton College (1983-1985), researching water transportation on the Thames — giving him a personal connection to European academic life.
08The Imperial couple have one daughter, Princess Aiko (born 2001), who in 2023 became a full working member of the Imperial Household as Japan's succession laws remain a topic of national debate.

Emperor Naruhito is the 126th Emperor of Japan and head of state of the world's third-largest economy. He and Empress Masako are on an official state visit to Belgium — the most formal category of diplomatic visit, involving a full programme of official receptions, meetings with the head of government, a state dinner, and often a joint communiqué.

Background

1866: Japan and Belgium sign their first Treaty of Amity, Commerce and Navigation — among Meiji Japan's earliest formal diplomatic agreements with a European nation. 1885: Japan establishes a permanent diplomatic mission in Brussels. 1952: Belgium is among the first European nations to re-establish full diplomatic relations with Japan after the San Francisco Peace Treaty. 1985: Crown Prince Akihito and Crown Princess Michiko visit Belgium in a landmark royal exchange. 2019: Naruhito ascends to the Chrysanthemum Throne on 1 May — the first Japanese Emperor to succeed following his father's historic abdication, the first in approximately 200 years. 2021: The Japan-EU Economic Partnership Agreement (EPA) enters full force, eliminating most tariffs between Japan and EU member states including Belgium. 2023: Japan-EU Security Partnership upgraded; Belgium formally supports Japan's Indo-Pacific posture and Japan-NATO cooperation framework. 23 June 2026: Emperor Naruhito and Empress Masako are received by King Philippe and Queen Mathilde at the Royal Palace of Brussels in an official state visit.

OIS Intelligence

Impact

Regional — Japanese corporations are significant economic actors in Belgium. Toyota's European headquarters in Brussels employs hundreds of staff. Mitsubishi, Panasonic, and Honda all maintain Belgian operations. Japanese tourism — particularly to Bruges, Brussels and the Ardennes — contributes tens of millions of euros annually to Belgian hospitality revenues. The estimated 5,000 Japanese nationals living in Belgium represent a stable, long-established community with professional ties to EU institutions, Japanese multinationals, and diplomatic missions. The visit is expected to yield a joint communiqué on trade facilitation and bilateral cultural exchange.

Sources & evidence

Le Soir / Le Soir Magazine · 2026-06-23
Belgian Royal Palace — Official Communications · 2026-06-23
Embassy of Japan in Belgium · 2026-06-23