diff --git a/src/main/kotlin/dev/usbharu/hideout/query/UserQueryService.kt b/src/main/kotlin/dev/usbharu/hideout/query/UserQueryService.kt
new file mode 100644
index 00000000..2da0512d
--- /dev/null
+++ b/src/main/kotlin/dev/usbharu/hideout/query/UserQueryService.kt
@@ -0,0 +1,10 @@
+package dev.usbharu.hideout.query
+
+import dev.usbharu.hideout.domain.model.hideout.entity.User
+
+interface UserQueryService {
+    suspend fun findById(id: Long): User
+    suspend fun findByName(name: String): List<User>
+    suspend fun findByNameAndDomain(name: String, domain: String): User
+    suspend fun findByUrl(url: String): User
+}
diff --git a/src/main/kotlin/dev/usbharu/hideout/query/UserQueryServiceImpl.kt b/src/main/kotlin/dev/usbharu/hideout/query/UserQueryServiceImpl.kt
new file mode 100644
index 00000000..d51938d6
--- /dev/null
+++ b/src/main/kotlin/dev/usbharu/hideout/query/UserQueryServiceImpl.kt
@@ -0,0 +1,23 @@
+package dev.usbharu.hideout.query
+
+import dev.usbharu.hideout.domain.model.hideout.entity.User
+import dev.usbharu.hideout.repository.Users
+import dev.usbharu.hideout.repository.toUser
+import org.jetbrains.exposed.sql.and
+import org.jetbrains.exposed.sql.select
+
+class UserQueryServiceImpl : UserQueryService {
+    override suspend fun findById(id: Long): User = Users.select { Users.id eq id }.single().toUser()
+
+    override suspend fun findByName(name: String): List<User> {
+        return Users.select { Users.name eq name }.map { it.toUser() }
+    }
+
+    override suspend fun findByNameAndDomain(name: String, domain: String): User {
+        return Users.select { Users.name eq name and (Users.domain eq domain) }.single().toUser()
+    }
+
+    override suspend fun findByUrl(url: String): User {
+        return Users.select { Users.url eq url }.single().toUser()
+    }
+}