Pandora has occasionally been used by the British gentry (for girls with brothers who might be called Peregrine) and is now starting to be heard in the US too: It was given to 39 baby girls last year. 
 Down side: Pandora was the mythological first woman on earth whose curiosity caused her to lift a forbidden box and inadvertently unleash all the evils of the world. But perhaps she's paid the price long enough--Pandora is riding the wave of mythological names used for babies after centuries of being confined to legend.
 Pandora is the eponymous title character of an Anne Rice vampire novel, and appears in the Adrian Mole books. There was a Pandora character on Skins, who was adorably called Panda.

Pandora

Penelope is an unlikely 21st century baby name success story. Off the Top 1000 for 25 years, Penelope jumped back on in 2001 and has been heading uphill ever since, propelled by the trend for mythological names, Spanish actress Penelope Cruz, and some high-profile celebrity babies. 
 
In Greek mythology, Penelope was the wife of Odysseus in Homer’s Odyssey. It has two possible origin stories—Penelope was either derived from the Greek pēnē, meaning "thread of a bobbin", or from penelops, a type of duck. Mythological Penelope was cared for by a duck as an infant, and later was known for fending off would-be suitors by pretending to weave a garment.
 
Penelope's status as a Kardashian baby name -- Kourtney's daughter Penelope was born in 2012 -- brought the ancient name to widespread attention. The most popular <a href="https://nameberry.com/search/girls-names/p">girls' name starting with P</a>, Penelope was also picked for their girls by Tina Fey, by Anna Chlumsky, and by Natalie and Taylor Hanson, of the group Hanson. 
 Penelope has several British novelists as namesakes—Penelopes Fitzgerald, Mortimer, Gilliatt, and Lively. And yes, she's also a Harry Potter character: Penelope "Penny" is a student at Hogwarts.
 A perennial Nameberry favorite, Penelope can be shortened to the traditional Penny or -- Berry style -- the fresher Nell or Poppy.

Penelope

This simple, elegant name offers something for many kinds of parents, from writers and history buffs to photographers to Pennsylvania dwellers. Most famous bearers are comedian Penn Jillette and Gossip Girl hottie Penn Badgley, both of whom were given this distinctive name at birth. Long obscure, Penn seems destined for greater usage.
 More familiar as a surname, Penn has had a number of distinguished bearers, including Pennsylvania founder William, director Arthur, photographer Irving, and actor/activist Sean.

Penn

Occasionally heard in England, rarely here. 

Penna

Parents are beginning to scan the whole spice shelf for inspiration, picking up on Saffron, Sage, and Cinnamon -- and opening up a chance for this spiciest possibility of all; used for peppy TV characters. 

Pepper

Peridot is the gem of the month of August, a vibrant green mineral, said to be good for helping people put the past behind them, and an interesting, undiscovered jewel name. It was regarded in ancient times as the symbol of the sun.
 Peridots figure in the mythologies of several cultures, including the ancient Egyptian and Roman. They are highly valued in Hawaii, where it is believed that they are the tears of the volcano goddess Pele. 
 If you want a truly original gem name, you might consider this instead of Opal or Ruby.

Peridot

Persephone is the esoteric name of the Greek mythological daughter of Zeus by Demeter, the queen of the harvest. After she was kidnapped by Hades to be Queen of the Underworld, it was decreed by Zeus that she would spend six months of the year with her mother, allowing crops to grow, and six in mourning, thus accounting for the seasons.
 Despite the mixed message of her mythological past, Persephone has a light and lyrical aura, and pleasant associations with springtime and the harvest; she was also goddess of spring growth. Persephone was seen in the Matrix movies, played by Monica Bellucci, and could make an interesting replacement for the overused Stephanie.
 Persephone's meaning is in dispute: While some sources give it as the worrisome "bringing death," others indicate that's it's associated with dark blue and with speaking. Persephone was called Kore in childhood; in Roman mythology, she is Proserpina.
 Persephone is popular on Nameberry, ranking in the Top 100.

Persephone

The name Persia derives from Avestan Parsa, the name of the Indo-European nomadic people who migrated into southern Iran in about 1000 BCE. Persis or Persea, the feminine form of Perseus, feel more namelike.

Persia

Piper is a bright, musical name that entered the list in 1999, one year after the debut of the TV series Charmed, which featured a Piper, and it's been a consistent riser since. Piper Kerman is the memoirist whose prison experiences provided the basis for the hit Netflix series Orange is the New Black.
 Piper has been chosen by several celebs for their daughters, including Gillian Anderson and Cuba Gooding, Jr., and is now one of the top <a href="https://nameberry.com/search/girls-names/p">girls' names starting with P</a>.
 One of the first Pipers on the scene was Piper Laurie (born Rosetta), after whom actress Piper Perabo was named.

Piper

Super-sweet name that was the title of a Broadway play -- but best known as a type of apple. The Dutch variation is Pepijn is finding some popularity in that country, where short nickname names are stylish.

Pippin

Pixie is a cute -- quite possibly too cute -- name that suddenly feels possible thanks to the craze for names that contain the letter x.  Though its origin may be uncertain, a pixie is internationally recognized as a sprite or fairy: tiny, sometimes green, usually pointy-eared.

Pixie

British-born novelist Plum Sykes has taken this rich, fruity name out of the produce section and put it into the baby name basket. It's more appealing than Apple, more presentable than Peaches. The French equivalent, Prune, is very fashionable there but would not fly with English speakers.
 Plum Sykes was born Victoria, and her nickname derived from the variety of fruit called the Victoria Plum.
 Plum makes an appealing middle name choice--Moon Unit Zappa used it as such for her daughter Matilda. The color of the fruit makes it one of the appropriately amethyst-hued <a href="https://nameberry.com//list/614/names-for-aquarius-babies">names for Aquarius babies</a>.

Plum

The Roman god of the underworld, the former ninth planet, a cartoon dog...but not a baby. 

Pluto

A handful of baby girls were named Poem in the US in the most recent year, along with Poet and Poetry. But of course, these word names can work for boys too.

Poem

A recently entered name on the roster, Poet was used for her daughter by Soleil Moon (Punky Brewster) Frye, who obviously appreciates the advantages of an unusual name. This is a possible middle name choice for verse-loving parents who want to skip specifics like Auden or Poe or Keats or Tennyson and go with the generic.
 Possible alternatives: Poetry, Poesie, Sonnet (used by Forest Whitaker)

Poet

Castor's twin in the constellation Gemini. That final x makes this name modern and cool. 

Pollux

A sweet, nostalgic nosegay kind of name, Posy has been long fashionable in England, a country of gardeners, but this pretty bouquet-of-flowers name is still rarely heard in the US, though it could be seen as a more unusual possible alternative to Rosy or Josie.
 Posy is a little sister name in the Hunger Games series. Before that, Posy Fossil was a character in Noel Streatfeild's Ballet Shoes. Posy is by far the least popular version of the name, with Posie first, Posey second, and Posy used for only ten baby girls in the US last year.
 Posy (or Posey or Posie) could also work as a nickname for a range of other names, from Penelope to Sophia--it started as a pet form of Josephine. Other P-beginning flower names you may want to consider along with Posey: Poppy, Petal, Primrose.

Posy

Promise is one of those word names with an uplifting meaning that is making inroads as a <a href="https://nameberry.com/girls-names">girls' name</a>, like sisters Dream and Serenity. How promising is Promise as a first name? Our try at cleverness illustrates perhaps the biggest problem with naming your baby girl Promise: It will be difficult for people to resist making bad puns on the name. We promise (argh) you'll be tired of hearing them well before your baby Promise's first birthday.

Promise

In France, pronounced PRO-spare, Prosper is a fairly common name; here it presents a worthy aspirational message for a child. 
 Prosper was the name of several early saints, including a noted fifth century theologian, St. Prosper of Aquitaine, and was a favorite of English Puritans.
 Prosper has strong associations with P.Merimee, who wrote the novel Carmen, upon which the opera is based. Prospers were also the protagonists of two other books, The Shining Company by Rosemary Sutcliff and The Thief Lord by Cornelia Funke.
 The Italian version, Prospero, is another attractive option, with ties to Shakespeare's magician character in The Tempest.

Prosper

Shakespeare's Tempest has kept the name Prospero alive.

Prospero

Puck was Shakespeare's mischievous pixie who'a had a few television incarnations in more recent years. A popular name in The Netherlands but nowhere else, from what we can tell.

We love Puck for its energy and insouciance, but might not give it to a real child due to its similarity to a popular curse word.

The Master List - P