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Sini Nihtilä

Hi! I am Sini Nihtilä, an illustrator and graphic designer. I love to illustrate adventures, no matter how big or small they are. My illustrations often have a warm atmosphere, fun details and imaginative elements.

I also have strong 10 years of experience in graphic design, especially in books and learning material.

• creating strong moods
• illustrating large and complex entities
• combining illustration and graphic design

WSOY
Otava Learning
Sanoma Pro
Kustannus Mäkelä
Lasten keskus
The Evangelical Lutheran Church of Finland
Lutheran Church in Helsinki
Kirjapaja

Sky / Personal work

Character art Illustrative art Children Emotions Home Love People

Sky / Personal work

Click to see more about the project.

Character art Illustrative art +5
Silja liikuntakirja - Löydä oma lajisi / WSOY

Illustrations for the children’s book Siljan liikuntakirja – Löydä oma lajisi.

The book consist of 96 pages and is richly illustrated.

Authors: Mikko Kalajoki & Sini Nihtilä
Publisher: WSOY (the book will be published during October 2026)

Children’s book Illustrative art Children People Sport

Silja liikuntakirja - Löydä oma lajisi / WSOY

Click to see more about the project.

Children’s book Illustrative art +3
Silja liikuntakirja - Löydä oma lajisi / WSOY

Illustrations for the children’s book Siljan liikuntakirja – Löydä oma lajisi.

The book consist of 96 pages and is richly illustrated.

Authors: Mikko Kalajoki & Sini Nihtilä
Publisher: WSOY (the book will be published during October 2026)

Children’s book Illustrative art Children People Sport
Silja liikuntakirja - Löydä oma lajisi / WSOY

Illustrations for the children’s book Siljan liikuntakirja – Löydä oma lajisi.

The book consist of 96 pages and is richly illustrated.

Authors: Mikko Kalajoki & Sini Nihtilä
Publisher: WSOY (the book will be published during October 2026)

Children’s book Illustrative art Children People Sport
Silja liikuntakirja - Löydä oma lajisi / WSOY

Illustrations for the children’s book Siljan liikuntakirja – Löydä oma lajisi.

The book consist of 96 pages and is richly illustrated.

Authors: Mikko Kalajoki & Sini Nihtilä
Publisher: WSOY (the book will be published during October 2026)

Children’s book Illustrative art Children People Sport
Silja liikuntakirja - Löydä oma lajisi / WSOY

Illustrations for the children’s book Siljan liikuntakirja – Löydä oma lajisi.

The book consist of 96 pages and is richly illustrated.

Authors: Mikko Kalajoki & Sini Nihtilä
Publisher: WSOY (the book will be published during October 2026)

Children’s book Illustrative art Children People Sport
Silja liikuntakirja - Löydä oma lajisi / WSOY

Illustrations for the children’s book Siljan liikuntakirja – Löydä oma lajisi.

The book consist of 96 pages and is richly illustrated.

Authors: Mikko Kalajoki & Sini Nihtilä
Publisher: WSOY (the book will be published during October 2026)

Children’s book Illustrative art Children People Sport
Superäiti / Kustannus Mäkelä

Illustrations for the children’s picturebook Superäiti.

Authors: Heli Koskinen & Sini Nihtilä
Publisher: Kustannus Mäkelä (2026)

Children’s book Illustrative art Picture book Children Family

Superäiti / Kustannus Mäkelä

Click to see more about the project.

Children’s book Illustrative art +3
Superäiti / Kustannus Mäkelä

Illustrations for the children’s picturebook Superäiti.

Authors: Heli Koskinen & Sini Nihtilä
Publisher: Kustannus Mäkelä (2026)

Children’s book Illustrative art Picture book Children Family
Superäiti / Kustannus Mäkelä

Illustrations for the children’s picturebook Superäiti.

Authors: Heli Koskinen & Sini Nihtilä
Publisher: Kustannus Mäkelä (2026)

Children’s book Illustrative art Picture book Children Family
Superäiti / Kustannus Mäkelä

Illustrations for the children’s picturebook Superäiti.

Authors: Heli Koskinen & Sini Nihtilä
Publisher: Kustannus Mäkelä (2026)

Children’s book Illustrative art Picture book Children Family
Superäiti / Kustannus Mäkelä

Illustrations for the children’s picturebook Superäiti.

Authors: Heli Koskinen & Sini Nihtilä
Publisher: Kustannus Mäkelä (2026)

Children’s book Illustrative art Picture book Children Family
Superäiti / Kustannus Mäkelä

Illustrations for the children’s picturebook Superäiti.

Authors: Heli Koskinen & Sini Nihtilä
Publisher: Kustannus Mäkelä (2026)

Children’s book Illustrative art Picture book Children Family
Cathedral-cover illustration 1/2026 / Lutheran Church in Helsinki

I got to create a cover illustration for an easter-themed Cathedral-magazine.

Client: Lutheran Church in Helsinki

Cover art Journalism People Spirituality

Cathedral-cover illustration 1/2026 / Lutheran Church in Helsinki

Click to see more about the project.

Cover art Journalism +2
Cathedral-cover illustration 1/2026 / Lutheran Church in Helsinki

I got to create a cover illustration for an easter-themed Cathedral-magazine.

Client: Lutheran Church in Helsinki

Cover art Journalism People Spirituality
Tietopalat: Musiikin tahdissa / WSOY

Illustrations for the book Tietopalat: Musiikin tahdissa.

Authors: Mirkka Auvinen ja Sini Nihtilä
Publisher: WSOY (2025)

Character art Children’s book Cover art Arts and Culture Children

Tietopalat: Musiikin tahdissa / WSOY

Click to see more about the project.

Character art Children’s book +3
Northern lights / Own project

Picture book Animals Folklore Nature People Winter

Northern lights / Own project

Click to see more about the project.

Picture book Animals +4
Illustrations for Kajo-study material / Otava

I have made few text related illustrations for Kajo-series, Otava’s ethics study materials for primary school.

Client: Otava (2024–2026)

Educational Animals

Illustrations for Kajo-study material / Otava

Click to see more about the project.

Educational Animals
Illustrations for Kajo-study material / Otava

I have made few text related illustrations for Kajo-series, Otava’s ethics study materials for primary school.

Client: Otava (2024–2026)

Educational Animals
Illustrations for Kajo-study material / Otava

I have made few text related illustrations for Kajo-series, Otava’s ethics study materials for primary school.

Client: Otava (2024–2026)

Educational Animals
Kirkkovuosi polulla / Evangelical Lutheran Church of Finland

Illustrations for Kirkkovuosi polulla -project. The material offers church workers inspiring materials for organizing various masses for families.

The work contains seven large illustrations related to different church holidays and seasons.

Illustrations are made in vector-format and are used on website and social media as well as on printed materials.

Year: 2023–2024

Social Media Children Family Festivities Spirituality

Kirkkovuosi polulla / Evangelical Lutheran Church of Finland

Click to see more about the project.

Social Media Children +3
Kirkkovuosi polulla / Evangelical Lutheran Church of Finland

Illustrations for Kirkkovuosi polulla -project. The material offers church workers inspiring materials for organizing various masses for families.

The work contains seven large illustrations related to different church holidays and seasons.

Illustrations are made in vector-format and are used on website and social media as well as on printed materials.

Year: 2023–2024

Social Media Children Family Festivities Spirituality
Kirkkovuosi polulla / Evangelical Lutheran Church of Finland

Illustrations for Kirkkovuosi polulla -project. The material offers church workers inspiring materials for organizing various masses for families.

The work contains seven large illustrations related to different church holidays and seasons.

Illustrations are made in vector-format and are used on website and social media as well as on printed materials.

Year: 2023–2024

Social Media Children Family Festivities Spirituality
Kirkkovuosi polulla / Evangelical Lutheran Church of Finland

Illustrations for Kirkkovuosi polulla -project. The material offers church workers inspiring materials for organizing various masses for families.

The work contains seven large illustrations related to different church holidays and seasons.

Illustrations are made in vector-format and are used on website and social media as well as on printed materials.

Year: 2023–2024

Social Media Children Family Festivities Spirituality
Luomiskirja / Kirjapaja

Illustrations, book cover design and layout design for the book Luomiskirja.

Publisher: Kirjapaja, 2023 / Author: Mio Kivelä

Cover art Picture book Animals Inclusivity Nature People Society Spirituality

Luomiskirja / Kirjapaja

Click to see more about the project.

Cover art Picture book +6
Luomiskirja / Kirjapaja

Illustrations, book cover design and layout design for the book Luomiskirja.

Publisher: Kirjapaja, 2023 / Author: Mio Kivelä

Cover art Picture book Animals Inclusivity Nature People Society Spirituality
Luomiskirja / Kirjapaja

Illustrations, book cover design and layout design for the book Luomiskirja.

Publisher: Kirjapaja, 2023 / Author: Mio Kivelä

Cover art Picture book Animals Inclusivity Nature People Society Spirituality
Luomiskirja / Kirjapaja

Illustrations, book cover design and layout design for the book Luomiskirja.

Publisher: Kirjapaja, 2023 / Author: Mio Kivelä

Cover art Picture book Animals Inclusivity Nature People Society Spirituality
Luomiskirja / Kirjapaja

Illustrations, book cover design and layout design for the book Luomiskirja.

Publisher: Kirjapaja, 2023 / Author: Mio Kivelä

Cover art Picture book Animals Inclusivity Nature People Society Spirituality
Luomiskirja / Kirjapaja

Illustrations, book cover design and layout design for the book Luomiskirja.

Publisher: Kirjapaja, 2023 / Author: Mio Kivelä

Cover art Picture book Animals Inclusivity Nature People Society Spirituality
Luomiskirja / Kirjapaja

Illustrations, book cover design and layout design for the book Luomiskirja.

Publisher: Kirjapaja, 2023 / Author: Mio Kivelä

Cover art Picture book Animals Inclusivity Nature People Society Spirituality
Luomiskirja / Kirjapaja

Illustrations, book cover design and layout design for the book Luomiskirja.

Publisher: Kirjapaja, 2023 / Author: Mio Kivelä

Cover art Picture book Animals Inclusivity Nature People Society Spirituality
Luomiskirja / Kirjapaja

Illustrations, book cover design and layout design for the book Luomiskirja.

Publisher: Kirjapaja, 2023 / Author: Mio Kivelä

Cover art Picture book Animals Inclusivity Nature People Society Spirituality
See more illustrations in these categories
Character art Cover art Picture book Children’s book Educational Social Media Illustrative art Journalism Love Emotions Society Winter Children Animals Nature Home Sport Inclusivity Festivities Arts and Culture Spirituality People Folklore Family