The rise of the the various Isabel names may give a boost to this variation, which has a sunny, springtime feel.

Ivanna / Ivana both come out of the name "John" by way of the Russian variant Ivan. Whereas Joanna feels dated, Ivanna feels cosmopolitan and fresh. Ivanka (of Trump fame) is a diminutive version of Ivanna.

An Arabic name with a powerful and alluring meaning, in Islamic tradition, Isra refers to one part of the Night Journey that the Prophet Muhammad, in which he led other prophets such as Ibrahim, Isa, and Musa in prayer. Popular in Belgium, the UK, and the Netherlands, it is climbing the US charts.

A name used in the Caribbean, taken from the Rastafarian term that translates best to "positive and powerful." Rastas often greet each other by saying, "Are you feeling Irie today?"

This cutesy nickname is best known as that of Imogene Threadgoode in the movie Fried Green Tomatoes.

The Isidora spelling, though equally legitimate, is about 90 percent less common than Isadora.

A warm, sunny, and extremely rare name, even within its native France. Idalie would be especially perfect to honor an Ida.

A name that's unknown in the US and Britain but is popular as a nature name in Finland. May also be known as a Hungarian variation of Amelia and a Spanish form of Wilhelmina.

This is a Greenlandic girls' name made royal when Prince Frederik and Princess Mary - now King and Queen - named their twin daughter Josephine Sophia Ivalo Mathilda.

Frequently cited as an example of cruel baby naming, à la Ima Hogg.

Issa might make more sense if you're using it as a nickname for any one of the various names ending in -issa, but this spelling is also an Arabic and Hebrew boy name. The Isa spelling is almost exclusively feminine.

Ilsa is remembered as the radiant but tragic heroine of "Casablanca," and it's having something of a European resurgence.

An ancient Mesopotamian goddess of love, war and justice, with a name that fits modern tastes. In recent years it has become a rare but steady fixture near the bottom of the charts, and feels full of potential for parents looking for an offbeat name from mythology.

Iyla, now a Top 1000 girls' name in the US, resembles many other popular names, from the Top 100 Isla to the Turkish Ayla, with which it shares a moonlit meaning.

A modern Greek form of the mythological name Hero, or a Japanese name meaning "color." Iro is also a name in Finnish mythology, derived from Irina and Irene. Iro was the mother of the three main gods of Finnish legend.

A unisex cultural crossover that has seen a little use from the 1990s onwards. In Japanese mythology, Inari is an androgynous deity associated with rice, tea and foxes. In Finland, it is the name of a region, lake and village which is a center of Sami culture.

This Yaygir Aboriginal name is the name of two towns in Australia and is also occasionally spotted as a name. Meaning "by the sea" the name is perfect for beach-going families.

Ingeborg (and all Germanic and Scandinavian names beginning with Ing-) references the ancient fertility god Ing. Ing, later known as Freyr, is one of the primary gods in Old Norse mythology.

Innogen is the Shakespearean name that never was. Most sources will tell you that Shakespeare intended to use Innogen for a character in Cymbeline, but his printer mistook the twos Ns for an M, thus inventing Imogen. This may or may not be true — Imogen seems to have existed before his time, and Shakespeare may have changed the spelling on purpose — but nevertheless, it makes for a great name story.

Diminutive of Ignatius or its female form Ignatia – or, if you're thinking outside the box, of Ingrid or even Indigo. British actor, presenter and comedian Noel Fielding named his second daughter Iggy in 2020.