How Many Prime Ministers Has Japan Had?

It depends how you count. By Japan\u2019s official tally, which numbers each premiership from Itō Hirobumi in 1885, Sanae Takaichi is the 105th prime minister. But only about 64 individuals have actually held the office — the gap is all the leaders who served more than once. Takaichi, in office since October 2025, is also Japan\u2019s first woman prime minister.

105premierships since 1885 — but only about 64 people

Correct as of June 2026.

105, or 64?

Japan numbers premierships, not people. Watch the gap.

105Official count

Japan numbers each premiership in order from Itō Hirobumi in 1885. By that official count — used by the Prime Minister\u2019s Office — Takaichi is the 105th.

Why 105 and 64 are both true

Japan does something unusual: it numbers premierships, not people. Every time the Diet designates a prime minister — even the same person again, even after a routine re-election — the count ticks up by one. So when Sanae Takaichi was re-designated after her February 2026 election win, she became the 105th premiership, counting all the way back to Itō Hirobumi in 1885.

Count the actual human beings instead, and the figure drops to about 64. The difference is all the leaders who returned: Itō Hirobumi served four separate times, Shinzo Abe and Shigeru Yoshida twice each, and many others came back after a gap. It is the same office, counted two completely different ways.

The most fragile chair among rich democracies

The striking feature of the Japanese premiership is how briefly most people hold it. The average tenure is just over two years, and twenty prime ministers have lasted less than a single year. For long stretches the job rotated almost annually as factions inside the ruling Liberal Democratic Party traded the leadership among themselves.

That makes the exceptions stand out. Shinzo Abe broke every record with more than eight years in two spells, before his assassination in 2022; Eisaku Satō and Shigeru Yoshida also governed for years. But for most holders, the real danger was never the opposition — it was losing the confidence of their own party.

The full list, in order

Listing all 64-or-so individuals (across 105 premierships) would fill the page, so here are the ones that matter most: the firsts, the record-holders, and the leaders of recent years. The number beside each is their official premiership number.

Key prime ministers — a selection

The firsts, the records and the recent leaders. The number shown is each one\u2019s place in Japan\u2019s official count of premierships.

Showing 17 holders

A history written in firsts — and in violence

The list is studded with milestones. Hara Takashi became the first "commoner" prime minister in 1918; Eisaku Satō won a Nobel Peace Prize; and in October 2025 Sanae Takaichi became the first woman ever to lead Japan, before winning a landslide snap election months later.

It is also marked by violence to a degree few democracies share. Itō Hirobumi was assassinated in 1909, Hara Takashi at Tokyo Station in 1921, and Inukai Tsuyoshi was shot in office in 1932 — an attack that helped end pre-war democracy. More recently, former prime minister Shinzo Abe was assassinated in 2022. The office that changes hands so often has also been a dangerous one to hold.

How much power is in the job?

On paper a Japanese prime minister looks like any parliamentary leader. In practice the job has been the most fragile among wealthy democracies — and the threat usually came from within the ruling party.

How much power does the prime minister actually have?

The title is the easy part. The real measure is how hard the holder is to remove.

Head of state too?

No. The Emperor is head of state — a purely symbolic role since 1947. The prime minister leads the government.

How they get the job

Not directly elected. The PM is designated by the National Diet and appointed by the Emperor.

Length of term

No fixed term, and historically short — the average premiership has lasted only about two years.

Can be sacked mid-term?

Yes — by losing the Diet\u2019s confidence, or, more often, by losing the leadership of the ruling party.

Control of parliament

Usually depends on the long-dominant Liberal Democratic Party; factional infighting inside it has toppled many PMs.

Constitutionally similar to other parliamentary leaders, but unusually fragile in practice: the real threat to a Japanese PM has rarely been the opposition — it has been their own party\u2019s factions.

In office now: Sanae Takaichi (LDP)

Japan\u2019s first woman prime minister, appointed by Emperor Naruhito on 21 October 2025; re-designated after a landslide snap-election win in February 2026, making her the 105th premiership by the official count.

Office-holder correct as of June 2026.

See how this compares

A Japanese PM rarely lasts as long as a single US presidential term, yet holds a similar constitutional role. See all twelve leaders side by side and compare how secure each office really is.

→ Open the world leaders map

Think you know them? Prove it

A quick quiz. The counting questions catch most people.

Question 1 of 8Score: 0

About how long does the average Japanese premiership last?

Sources

Prime Minister\u2019s Office of Japan (kantei.go.jp) — Takaichi designated the 105th prime minister, February 2026
Britannica — Sanae Takaichi, first woman prime minister of Japan
Constitution of Japan (1947), Articles 6 and 67 — designation and appointment of the prime minister
Wikipedia — List of prime ministers of Japan (official numbering; roughly 64 individuals)
Natural Earth public-domain country data (via world-atlas), used on the Leaders of the World map

A hundred and five premierships, about sixty-four people, and an average stay of barely two years — in Japan, reaching the top has always been easier than staying there.