Pj

given name · Latin script

Meaning, in English: Abbreviation of pajama

Recorded for both men and women· direction only, no split published

/pʒ/(machine-generated) pronunciation, model-generated

Pj is a given name written in the Latin script, with more bearers in the United States than in any other country.

rarermore common
  • PHPhilippines≈1 in 68K(inferred from the name graph)
  • AUAustralia≈1 in 77K
  • USUnited States≈1 in 81K

carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). One hue, darker where it is more common; hover a country for its figure.

United States (inferred from the name graph)

≈4,100 people, est.

Sources
354 (measured from records)

Highest-authority source

≈1 in 7.3K (inferred from the name graph)

Ireland, est.

measured from records inferred from the name graph

Name dossier (print, CSV)

Meaning & origin(measured from records)

initialism of Partido Justicialista (“Justicialist Party”), an Argentine political party

Sources 1

  • kaikki.org Wiktionary extract (IPA + transliterations)

Attested in 1 language in the etymology graph.

How Pj is read(measured from records)

Pj is one spelling over 2 language communities, and the dictionaries record it differently in 2 of them. Each row is what a source recorded for that language, beside the share of this name’s records the language holds. No single row is the name’s meaning.

  • English69%

    Abbreviation of pajama.

    as a wordkaikki.org Wiktionary extract (IPA + transliterations)

  • Spanish7.8%

    initialism of Partido Justicialista (“Justicialist Party”), an Argentine political party

    as a wordkaikki.org Wiktionary extract (IPA + transliterations)

The share is ours — how much of this name’s records each language holds. The sense beside it is the source’s, quoted and credited, including where it names a gender. We do not publish a gender of our own per language: our records carry one figure for the spelling as a whole.

Where in the world(measured from records)

Pj counted together with the spellings and other-language forms grouped with it. Where a register counted another spelling, the row names it.

Sorted by bearers: national registers' counts, and Mondonomo's estimates (≈, est.) where no register counts.

Where Pj is recorded, by country
CountryMost common spellingSources
US United States—≈4,100 est.≈1 in 81K7Pj354
ID Indonesia—≈2,800 est.≈1 in 95Klisted—2
PH Philippines—≈1,600 est.≈1 in 68K—Pj55
ZA South Africa—≈720 est.≈1 in 78K—Pj43
IE Ireland#425≈710 est.≈1 in 7.3K—Pj70
AU Australia—≈330 est.≈1 in 77K1Pj87
NZ New Zealand—≈82 est.≈1 in 60K—Pj34
SG Singapore—≈82 est.≈1 in 75K—Pj23
NL Netherlands—511 in 339K36Pj27

Exact figures are national registers' own counts, while figures marked ≈ and est. are Mondonomo’s estimates, counted from our sources and calibrated against those registers; hover one for how far to trust it in that country. A dash means neither exists.

Registers cited: SSA — National Baby Names (1880–present); SA BDM — Popular baby names South Australia (1944–present); Meertens NVB — Nederlandse Voornamenbank (all-time BRP bearer counts, 2018); the id-github-names register. Figures without a register are Mondonomo estimates; see Methodology.

Country figures for a list of names, at full precision, are available under licence rather than by scraping this table (how that works).

Other names spelled this way(inferred from the name graph)

Pj is also recorded as 4 other names, grouped separately because the records behind them do not connect to the one described above.

  • Spanish given name5 spellings in the group

    Most recorded in United States, Philippines, Mexico, Colombia

    Also written P'J, P-J

  • a separate name2 spellings in the group

    Also written P-J

  • French given name2 spellings in the group

    Most recorded in France, United States, Canada, United Kingdom

    Also written P-J

  • Chinese given name2 spellings in the group

    Most recorded in United States, China, Ireland, Taiwan

    Also written P-J

59 further groups record this spelling and are not listed here.

Grouping is the name graph's, not a register's: two spellings join a group when the evidence links them, so a group is a claim about the records rather than about the people.

Other recorded senses(measured from records)

Pj is also recorded in 4 other lexicons, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.

  • In Indonesian, initialism of penanggung jawab (“responsible, person in-charge”)

    as a wordkaikki.org Wiktionary extract (IPA + transliterations)

  • In Malay, initialism of pendidikan jasmani (“physical education”)

    as a wordkaikki.org Wiktionary extract (IPA + transliterations)

  • In German, abbreviation of praktisches Jahr (“practical year”)

    as a wordkaikki.org Wiktionary extract (IPA + transliterations)

  • Symbol for picojoule, an SI unit of work or energy equal to 10⁻¹² joules.

    as a wordkaikki.org Wiktionary extract (IPA + transliterations)

Ordered by how much of this spelling's record each language holds, so a sense from a language the name is barely used in sits last rather than first.

Notable people with this name(measured from records)

19401960198020002020P. J. O'Rourke, b. 1947P. J. Alexander, b. 1978PJ Knox, b. 1988PJ Duke, b. 2006
  • P. J. O'Rourkeb. 1947USnot in their usual nameAmerican political satirist and journalist (1947–2022)
  • P. J. Alexanderb. 1978USnot in their usual nameAmerican football player
  • PJ Knoxb. 1988GBBritish pornographic actor
  • PJ Dukeb. 2006USAmerican wrestler (born 2006)
  • P. J. MurphyIEnot in their usual nameIrish politician

The ten people covered by the most Wikipedia language editions — a proxy for cross-cultural notability, which favours historical and Western figures over equally prominent contemporary ones — shown by birth year. Source: Wikidata (CC0).

How to address them(machine-generated)

FormalDear Colleague,
InformalHello,

Evidence(measured from records)

Attested in 9 sources across 6 countries.

Official registers attesting Pj
CountryRegisterYearCountRank
NL NetherlandsMeertens NVB — Nederlandse Voornamenbank (all-time BRP bearer counts, 2018)—36#8,193
NL NetherlandsMeertens NVB — Nederlandse Voornamenbank (all-time BRP bearer counts, 2018)—15#17,574
US United StatesSSA — National Baby Names (1880–present)20089—
US United StatesSSA — National Baby Names (1880–present)19849—
US United StatesSSA — National Baby Names (1880–present)20208—
US United StatesSSA — National Baby Names (1880–present)20168—
US United StatesSSA — National Baby Names (1880–present)19988—
US United StatesSSA — National Baby Names (1880–present)19858—
US United StatesSSA — National Baby Names (1880–present)19798—
US United StatesSSA — National Baby Names (1880–present)19788—
US United StatesSSA — National Baby Names (1880–present)20257—
US United StatesSSA — National Baby Names (1880–present)20067—

Reference works 1

  • Wikidata name items (native-script + romanized given/family names)

These works list the name; their figures are licensed and are not reproduced here.

Register rows as of the 2026-10-09 data build.

Frequently asked questions

Where does the name Pj come from?
initialism of Partido Justicialista (“Justicialist Party”), an Argentine political party Recorded by kaikki.org Wiktionary extract (IPA + transliterations).
How do you pronounce Pj?
A machine transcription gives /pʒ/ (IPA) for English.
What does the name Pj mean?
In English, Abbreviation of pajama.
Is Pj a male or female name?
Pj is recorded for both men and women. We don't publish a percentage split: a record's gender belongs to the person and is attached to every given name on that record, so names in cultures where a name string also carries a parent's or spouse's given name pick up large cross-gender counts.
In which country does Pj have the most bearers?
Mondonomo estimates about 4.1 thousand people named Pj in the United States, more than in any other country we hold, where it is most often spelled pj.
How common is the name Pj?
In the Netherlands, the national register counted 51 people named Pj, about 1 in 339 thousand residents.
How common is Pj compared with other names?
In Ireland, Pj is the 425th most common given name of 14,976 given names recorded there.

What do you want to know about Pj?

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Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/pj

The payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. It takes a free API key (1,000 requests a day), which returns what this page shows everyone; the full country table, every register citation and the year-by-year series come with a licensed key, as does bulk access.

About this data

measured from records inferred from the name graph machine-generated

These figures come from the data snapshot of and will change as it is rebuilt.

Statistics are aggregated from the Mondonomo name corpus; related names and etymology are inferred from the name graph; pronunciation and any machine-marked transliterations are model-generated. Read how the numbers are made, including their known failure modes, and where the data comes from.

Reference works we consult — surname dictionaries, official name registers, Wikidata and Wiktionary — are named directly, beside the claims they support. The per-country source counts also include datasets of person records: we publish how many there are and their authority tier, but not their names.

Cite this page Mondonomo, “Pj” — the 425th most common given name in Ireland. Data snapshot 2026-10-10.

See how Pj parses inside a full name →