The following is a list of characters and locations from the Japanese fantasy series In Another World with My Smartphone which originated as a web novel in 2013 and has been since adapted into a series of light novels, manga, and two seasons of anime.

Characters and locations Duchy of Brunhild A sovereign city located between the Kingdom of Belfast and Regulus Empire, governed by Touya Mochizuki. The city's development is being managed by Kousaka Masanobu of the Elite Four, who is also the counselor of the city.

A fifteen-year-old from Earth and the series' main protagonist, reborn by God into another world as a way of apology for the latter's mistake of killing him. His smartphone is his only remaining connection to Earth; while he can no longer call anyone from his old life, he can still access the Internet, and the battery can be recharged with magical energy. He is bestowed with all seven attributes of magic: Fire, Water, Wind, Earth, Light, Dark, and Null, making him so powerful that it is nearly impossible for his enemies to take him down. Touya forms good friendships with Ende, Lyon, Lux, Cloud, and Reinhard. He has nine wives and nine children. He spends most of his time learning new kinds of spells, helping out people with business and political improvements, and recreating modern Earth's culture like food, culinary goods, entertainment, games, technology, infrastructure, attractions, luxury items, weapons, combat gear, and even Earth holidays. When Touya starts his new life, he worked as an adventurer then eventually in the series after foiling most of the villains' schemes and being engaged to four princesses, a duchess, a fairy court magician, and three female companions, he has become the founder and ruler of Duchy of Brunhild.

The elder sister of the Silhoueska twins, a pair of wandering adventurers, and with her natural impulsiveness as a fighter by profession. She has long hair and feels less feminine than Linze. Touya meets her and Linze early in his journey, rescuing them from rogues in an alleyway, and thereafter, they register as adventurers in his party with the local guild. Elze fights with a pair of enchanted gauntlets and can only use the Null magic 'Boost', which increases her physical abilities, She also forms close friendship with Yae and Hildegard. She is Touya's third fiancée and Elna's mother.

The younger sister of the Silhoueska twins. With her intelligence and natural talent, she is the magic specialist of the two sisters. She has short hair and can use three magic attributes: Fire, Water, and Light. Touya meets her and Elze early in his journey, rescuing them from rogues in an alleyway, and thereafter, they register as adventurers in his party with the local guild. She has a strong passion for Yaoi novels and fills Touya's Moon Reader Cafe with what series she knows on his list. She even forms good terms with Yumina and Princess Reliel Rehm Refreese, who too is a Yaoi fangirl and secretly a novelist of gay romances; even Prim and her fellow female guild receptionists are Yaoi fans alongside her. She is Touya's second fiancée and Linne's mother.

Born in the far eastern country of Eashen to a samurai family, Yae left her home to travel and hone her skills elsewhere. Touya's group crosses paths with her during their travels, helping to fend off a group of ruffians attacking her. Thereafter, she decides to accompany Touya on his travels. However, Yae is practically a human garbage disposal; regularly putting a strain on the group's funds to compensate for her high metabolism. Eventually, she returns to Eashen alongside the group to save her father, brother, and hometown from a provincial war within the country. Yae also made close friendship with Elze and especially Hildegard for their equal skills of swordsmanship. She is Touya's fourth fiancée and Yakumo's mother.

The daughter of Duke Alfred and Duchess Ellen Ernes Ortlinde, older sister of Edward, the niece of King Tristwin and Queen Yuel, and Yumina and Yamato's cousin (although she calls Yumina her big sister instead of cousin). Sushie prefers for her friends and family to call her . She meets Touya's group early in the story when they rescue her from an attempted kidnapping (later revealed to have been arranged by Count Balsa) and also saved her family butler Leim from dying of an arrow shot, leading to her forming a crush on Touya, though she doesn't get engaged to him until much later in the story. Due to her innocent naivety, Sue causes embarrassing moments. She is also good friends with Renne and Arma. She gets special training of self-defense or offense from Lapis and Cecile and light magic teachings from Leen. Later, to protect Sue from a political betrothal to a foreign fake prince suspected of pedophilia, she becomes Touya's sixth fiancée. She is also Stephania's mother.

The princess of Belfast, the daughter of King Tristwin and Queen Yuel, older sister of Prince Yamato, the niece of Duchess Ellen and Duke Alfred Ernes Ortlinde, and Sue and Edward's cousin (although she treats Sue more like a little sister rather than a cousin). Yumina met Touya when he heals her father from attempted poisoning, and quickly started to fall in love with him. Yumina possesses the Null magic "Mystic Eyes" of intuition, an ability that comes from her heterochromic eyes, which gives her the ability to see a person's true nature, Later on in the series, Yumina gains a dependent rait called foresight, which is the ability to see the future. She had close friendships with Lucia and Linze, and even Reliel for supporting her gay romantic materials that she writes in secret. She is Touya's first fiancée and Kuon's mother.

As head of the Fairy Tribe of Mismede, Leen serves as the court mage of the Kingdom of Mismede and is capable of using her personal null magic, 'Program'. Over the span of 200 years, she has used 'Program' to create an automated teddy bear named Paula who can interact with humans and other beings, though it has yet to gain the capability to speak. Because she had not used her wings for a long period of time, she is unable to fly. She meets Touya during a diplomatic trip from Belfast when Paula brings him to her personal chambers. Intrigued by his abilities, she asks him to become her disciple; when Touya declines, she becomes Mismede's ambassador to Belfast and Brunhild Dukedom as an excuse to spend more time around him and getting information from her apprentice Charlotte as well punishing her for telling Touya about her master's vile sadistic past teachings. She gets along well with Sakura and teaches her magic along with Sue and Renne. She is Touya's eighth fiancée and Quun's mother.

The third princess of the Regulus Empire. Touya meets Lucia when he saved the empire from being overthrown by the imperial army in a coup, and she began to fall in love with him. He agrees to marry her after the Emperor of Regulus creates a truce with the King of Belfast, then she moves into the Brunhild Dukedom with Touya and everyone else. Lucia is a competitive person who hates losing. Her main weapons are twin swords. She is also diligent at cooking, has a sensitive taste bud, and is on good terms with Yumina. Like Sushie, she also prefers to be called by her nickname . She is Touya's fifth fiancée and Arcia's mother.

(Japanese); Molly Searcy (English) Hildegard is the first princess of Lestia Knight Kingdom. She is a rather chivalrous noble person and usually wears magic-enchanted armor. She is on good terms with Yae, as the two are quite skilled in swordsmanship, and is known as "Knight Princess". Hildegard fell in love with Touya after the battle with the Phrase. Then, she moves into the Brunhild Dukedom with Touya and appoints herself as his personal knight after officially joining the bride conference. Like Sushie and Lucia, she too prefers her nickname . She is Touya's seventh fiancée and Freigard's mother.

(Japanese); Reshel Mae (English) She is actually a potential successor of Xenoas Demon Kingdom. However, due to her being a demi-human and half demonkin, she is considered an outcast to others except Leen, whom she formed good terms with while living in Brunhild regardless of her highest magic quality to take the throne. One day, she survived an assassination attempt from Yulong's assassins arranged by her step-uncle Severus Arnos and escaped with her Null magic: Teleport, after faking her death, leading the people of her kingdom to believe she was killed. After being rescued by Touya and regenerating her lost limbs, she suffered amnesia and was nicknamed 'Sakura' by Touya for her pink hair. Her real name is Farnese Forneus, although she chooses to continue using her nickname. Prior to the series, she was bestowed with Phantom of Eyes which altered her face and changed her hair color, with sharp hearing ability. Currently, she stays with Touya at Brunhild Dukedom even after regaining her memories. She gets along very well with Leen. She becomes Touya's ninth fiancée and is also Yoshino's mother.

A young orphan girl who pickpockets people to survive poverty. Her mother died shortly after she was born, later in the following years, her father never returned from a quest to slay a magical beast, presumably having been killed. She was taught how to pickpocket by a kind travelling old lady in order to survive through hard times. Touya encounters her when she stole his wallet, he followed her with his smartphone (this does not happen in the anime). After saving her from territorial thugs, he took her in and had her work as a personal maid in his mansion and castle. Despite her difficult early childhood, she has shown to be a highly dependable, polite, and professional young woman with resourcefulness and fast learning skills. She can ride a bicycle that Touya made for her pretty well. In the following series, she learn the truth from Touya and Carol that her late mother is a runaway noblewoman from Regulus Empire and her necklace is magical tool with a wind stone that only triggers if the wearer is from the Rilettes bloodline. Renne was happy to stay with Touya and everyone who cares for her like family as well gladly taking holidays with her grandmother Mary and aunt Carol. She also has feelings for Touya, but has yet to marry him or become his mistress (whichever she chooses to be) while training to be a head maid. She is also good friends with Sue and Arma. Renne takes special training of self-defense with dagger technique from Cecile and Lapis, and wind magic teachings from Leen.

Touya's fifth child and Lucia's daughter. Like her mother, she is a skilled cook.

Touya's sixth child and Elze's daughter. Unlike her mother, she doesn't like fighting.

Touya's second child and the daughter of Hildegard. Just like her mother, she prefers her nickname . She is also a skilled fighter and is considered to be the scariest out of Touya's children when she's angry.

Touya's eighth child and the son of Yumina. He is Touya's only son. Kuon was named after his great-grandfather on his father's side. He is infatuated by Allistella, his fellow visitor from the future. Later in the series, Kuon and Allistella are engaged.

Touya's seventh child and Linze's daughter. She formed good terms with Allistella.

Touya's third child and the daughter of Leen. Like her mother, Quun has a thirst for knowledge. Though unlike Leen's obsession with Ancient Magic, Quun is obsessed with Golems, having created one that looks similar to Paula, named Parla. She is a naughty child among all of her siblings and likes teasing her family if that's required. Quun is heavily aware of how she will live several centuries and will outlive her siblings, seemingly not aware of her divine lineage; so she takes as many pictures with her own smartphone as she can of her family, so she can have them as solace when she misses them in later life.