Easygoing Territory Defense by the Optimistic Lord: Production Magic Turns a Nameless Village into the Strongest Fortified City (お気楽領主の楽しい領地防衛 ～生産系魔術で名もなき村を最強の城塞都市に～, Okiraku Ryōshu no Tanoshii Ryōchi Bōei: Seisan-kei Majutsu de Na mo Nakimura o Saikyō no Jōsai Toshi ni) is a Japanese light novel series written by Sou Akaike and illustrated by Kururi.

It began serialization on the user-generated novel publishing website Shōsetsuka ni Narō in May 2020.

Written by Sou Akaike, Easygoing Territory Defense by the Optimistic Lord: Production Magic Turns a Nameless Village into the Strongest Fortified City began serialization on the user-generated novel publishing website Shōsetsuka ni Narō on May 15, 2020.

[15] The manga adaptation is also licensed in North America by Seven Seas Entertainment.

[26] The series was also ranked third in the tankōbon category in the 2022 Next Light Novel Awards.