Is the Denise name day on July 8, May 15, or October 9?

All three dates exist and they are separate. National Denise Day is July 8, the French calendar honours Denise on 15 May, and 9 October is the feast of the masculine Saint Denis of Paris. Nothing documents a link between them.

Who created National Denise Day, and why July 8?

Nobody is documented as having started it, and no source explains the July date. What can be verified is that the day circulates on its own, with people named Denise posting about it on July 8.

Is Denise a French name?

French is a stage in the chain rather than its origin. The line runs from the Greek Dionysos through the Latin Dionysius to the French Denis, and Denise is the French feminine of that.

Did Denise Scott Brown win the Pritzker Architecture Prize?

No. Robert Venturi received it alone in 1991, and when a 2013 petition asked that Scott Brown be recognised as a joint laureate the jury refused, saying a later jury cannot reopen the work of an earlier one.

National Denise Day

Next celebratedThursday, July 8, 2027

A day belonging to a name America took up fast and put down: Denise has missed the top 200 in every decade since the 1980s, yet the spelling was already in England's poll tax lists of 1381.

See how to celebrate

Countdown to the day

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Last updated September 7, 2026 · by the Holiday Calendar TeamHave an update or spot an error?

YEARLY DATEJuly 8

OBSERVED INInternationally

CATEGORYNames

ORIGIN

Community Origin

FOUNDING ENTITY

Not documented

FIRST OBSERVED

Not documented

HOW THE HOLIDAY CAME TO BE

The French name day falls in May; this one does not.

National Denise Day is kept on 8 July by people named Denise, with dated posts from 2023, and it does not inherit the French name day for Denise, which Nominis places on 15 May. No founder, establishing act or registry filing has been located, and a full-text search of the Federal Register returns nothing mentioning the phrase.

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INTRO

Ranked 84th over a hundred years: then absent for thirty-five

National Denise Day belongs to a name that America took up fast and then put down. Denise ranks 84th among girls' names across the last hundred years of American birth records.

The Social Security Administration counts 371,279 of them across that span. Then the name simply stopped. It has not reached the agency's top 200 girls' names in any decade since the 1980s.

The day itself is harder to pin down than the name. No founder, filing or proclamation for National Denise Day could be located, and the Federal Register has never printed the phrase. Its oldest written form, by contrast, is eight hundred years old.

ORIGINS

Denise Day history

CHAPTER 01

From a god to a name

Denise begins with a god, but not directly. The Online Etymology Dictionary traces the feminine form back through Dennis to the French Denis, and from there to the Latin Dionysius. That Latin name was itself built from Dionysos, the Greek god of wine and revelry.

CHAPTER 02

The bishop who carried his head

The name reached France attached to a martyr. Denis, bishop of Paris, was beheaded alongside the priest Rusticus and the deacon Eleutherius in about 275. His feast is kept on 9 October.

He is usually shown holding his own head. The Catholic Encyclopedia is careful about why: according to the legend, the corpse rose after the execution and carried the head for some distance. The same account notes that the earliest surviving passion of Denis dates to the end of the sixth or the beginning of the seventh century and is interwoven with much legend.

CHAPTER 03

A paper trail, and a day without one

Devotion grew partly on a mistake. Hilduin, abbot of Saint-Denis, wrote the Areopagitica in 836 at the request of Louis the Pious, fusing the bishop of Paris with Dionysius the Areopagite. The Catholic Encyclopedia calls it a serious error that took deep root.

The name surfaces in English documents soon after. A survey of the manors of St Paul's recorded a Dionisia in London in 1222. By 1379 it had worn down in daily use into the diminutives Di and Diot.

The modern spelling arrives at the end of that century. Denise is written into the Suffolk poll tax lists of 1381.

Every stage of the name leaves a document behind it. The day named after it leaves none. No founder and no reason for the July date have been located.

WHY THIS DAY MATTERS

Why We Love National Denise Day

Evidence

A 100% sample of card applications, not a survey.

The federal tables behind Denise are not a poll. Each SSA decade page states that it draws on a 100% sample of Social Security card application data, so the name's rise and fall is a measurement rather than an impression. The century table even carries its own caveat, that a name high over a hundred years need not have been popular in every one of them.

Precision

The popular gloss on the name is wrong

The line repeated everywhere makes Denise mean a follower of Dionysius, the Greek god of wine. The god is Dionysus. Dionysius is the Latin personal name formed from the god's, and Denise descends from the personal name, one remove further along.

Calendars

A name can hold more than one day

Nominis, the name-day calendar of the Conference des eveques de France, honours Denise on 15 May rather than in July. The French date has its own martyr behind it and its own piece of weather folklore attached to it. A name day is a local institution, and the July observance did not inherit either.

BY THE NUMBERS

National Denise Day by the Numbers

Not in the top 200: Denise's US girls' rank, 1940s
26th: Denise's US girls' rank, 1950s
29th: Denise's US girls' rank, 1960s
53rd: Denise's US girls' rank, 1970s
117th: Denise's US girls' rank, 1980s

TIMELINE

Timeline

Denise martyred at Lampsacus

The French bishops' name-day calendar records a virgin martyr called Denise, killed with three companions at Lampsacus on the Hellespont. It dates her death to perhaps 251, following the Roman Martyrology.

Denis beheaded near Paris

Denis, bishop of Paris, is executed with the priest Rusticus and the deacon Eleutherius. His feast is kept on 9 October, and he is usually shown carrying his own head.

A second Denise among martyrs

The same French calendar records another Denise, counted among the martyrs of Africa under the Vandals. Two early saints share the name.

Hilduin writes the Areopagitica

The abbot of Saint-Denis, writing at the request of Louis the Pious, identifies the bishop of Paris with Dionysius the Areopagite. The error takes deep root across the Middle Ages.

Dionisia recorded in London

A Dionisia is entered in the Domesday of St Paul's, a survey of the cathedral's manors. It is the earliest form of the name listed in the medieval names corpus.

Denise appears in a tax roll

The modern spelling Denise is written into the Suffolk poll tax lists. The document is a tax roll rather than any kind of birth register.

GOOD TO KNOW

Denises in the record books

Denise Scott Brown, architect

The American Institute of Architects gave her and Robert Venturi its 2016 Gold Medal, its highest honour. She is the first living woman to receive it. The Gold Medal had historically gone to a single architect, so a duo had not previously been eligible.

Denise Mueller-Korenek, cyclist

On 16 September 2018 she rode 183.931 mph across the Bonneville Salt Flats, breaking a slipstream record that had stood since 1995. She was clipped behind a dragster and towed at the start, because her gearing was too high to pedal away from a standstill.

Denise Lewis, heptathlete

She took the lead after the javelin at Sydney in 2000 and held it, becoming the first British female multi-event Olympic champion since Mary Peters in 1972. Four years earlier at Atlanta she had won bronze by five points.

Denise Levertov, poet

Born in Ilford in Essex and never formally schooled, she was taught at home by her Welsh mother. At twelve she posted poems to T.S. Eliot, and by one account received a two-page typewritten reply offering excellent advice.

GET INVOLVED

How to Celebrate National Denise Day

Find her decade in the federal tables

Ask a Denise the year she was born, then find that decade in the Social Security Administration's own ranking tables. The name's standing moves sharply from one decade to the next, so her cohort is easy to place.

SETTLE

Settle the meaning argument properly

Someone will say the name means follower of the Greek wine god. Send them the etymology entry and let it do the arguing for you.

MARK

Mark the French date too

France puts Denise on 15 May, not in July. Send a second message that day, and quote the proverb that goes with it: A la Saint Denise s'arrete la bise.

LOOK

Look up the saint at the root of the name

Denis of Paris sits behind every Denise. The Catholic Encyclopedia entry sets out why he is usually shown holding his own head, and why the earliest account of his death is treated so cautiously.

TOAST

Toast the fastest Denise on record

Denise Mueller-Korenek holds the outright Guinness record for fastest bicycle speed in slipstream. Look up the run, then note the part most people miss: the separate male-category record still on the books is slower than hers.

Test your knowledge

How well do you know National Denise Day?

1 / 8

Which document does the spelling Denise first appear in, according to the medieval names corpus?

Answer

No. The United States has 12 permanent federal holidays under 5 U.S.C. 6103(a), and National Denise Day is not among them. A full-text search of the Federal Register returns no document mentioning the phrase at all.

COLOPHON

Sources

How we know what’s on this page. References, not endorsements.

21sources

16primary records

16independently dated

Primary records

U.S. Social Security Administration2026-03

Top Names Over the Last 100 Years

The 100 most common given names for boys and girls born in the United States between 1926 and 2025, with total occurrences for each, drawn from a universe of 174,147,370 girl births. Denise ranks 84th among girls with 371,279 occurrences.