diff --git a/app/app.vue b/app/app.vue
index 83d2c28..3bf48d6 100644
--- a/app/app.vue
+++ b/app/app.vue
@@ -2,6 +2,8 @@
 import { useNuxtApp } from 'nuxt/app'
 
 const nuxtApp = useNuxtApp()
+const route = useRoute()
+const requestURL = useRequestURL()
 const { locale } = useI18n()
 const gameDataStore = useGameDataStore()
 const modalStore = useModalStore()
@@ -122,6 +124,97 @@ const setupGameHead = () => {
   }
 }
 
+// Schema.org 구조화된 데이터 설정
+const setupStructuredData = () => {
+  if (!gameName.value) return
+
+  try {
+    // SEO용 URL은 설정 도메인이 아닌 실제 요청 호스트 기준 (SSR/CSR 모두 useRequestURL)
+    const baseUrl = requestURL.origin
+    const currentLocale = locale.value ?? defaultLangCode.value ?? 'ko'
+
+    // Organization Schema
+    const organizationSchema: Record<string, any> = {
+      '@context': 'https://schema.org',
+      '@type': 'Organization',
+      name: gameName.value,
+      url: baseUrl,
+    }
+
+    // 로고 이미지 추가 (favicon 중 PNG 우선)
+    if (faviconJson.value) {
+      const logoUrl = faviconJson.value[2] || faviconJson.value[0]
+      if (logoUrl) {
+        organizationSchema.logo = formatPathHost(logoUrl)
+      }
+    }
+
+    // SNS 링크 추가
+    const snsData = gameDataStore.snsJson
+    if (snsData) {
+      const sameAs: string[] = []
+      if (snsData.youtube?.use_yn === 1 && snsData.youtube?.url) {
+        sameAs.push(snsData.youtube.url)
+      }
+      if (snsData.twitter?.use_yn === 1 && snsData.twitter?.url) {
+        sameAs.push(snsData.twitter.url)
+      }
+      if (snsData.facebook?.use_yn === 1 && snsData.facebook?.url) {
+        sameAs.push(snsData.facebook.url)
+      }
+      if (snsData.discord?.use_yn === 1 && snsData.discord?.url) {
+        sameAs.push(snsData.discord.url)
+      }
+      if (snsData.instagram?.use_yn === 1 && snsData.instagram?.url) {
+        sameAs.push(snsData.instagram.url)
+      }
+      if (snsData.tiktok?.use_yn === 1 && snsData.tiktok?.url) {
+        sameAs.push(snsData.tiktok.url)
+      }
+
+      if (sameAs.length > 0) {
+        organizationSchema.sameAs = sameAs
+      }
+    }
+
+    // WebSite Schema - 사이트 정보
+    const websiteSchema: Record<string, any> = {
+      '@context': 'https://schema.org',
+      '@type': 'WebSite',
+      name: gameName.value,
+      url: baseUrl,
+      inLanguage: currentLocale,
+    }
+
+    // 설명 추가 (있는 경우)
+    if (gameMetaTag.value?.page_desc) {
+      websiteSchema.description = gameMetaTag.value.page_desc
+    }
+
+    useHead({
+      script: [
+        {
+          type: 'application/ld+json',
+          innerHTML: JSON.stringify(organizationSchema),
+        },
+        {
+          type: 'application/ld+json',
+          innerHTML: JSON.stringify(websiteSchema),
+        },
+      ],
+      link: [
+        {
+          rel: 'canonical',
+          href: `${baseUrl}${route.path}`,
+        },
+      ],
+    })
+  } catch (error) {
+    // eslint-disable-next-line no-console
+    console.error('[setupStructuredData] Failed to setup schema:', error)
+  }
+}
+
 if (import.meta.server) {
   const gameData = nuxtApp.ssrContext?.event?.context?.gameData
   if (gameData) {
@@ -130,6 +223,7 @@ if (import.meta.server) {
 }
 
 setupGameHead()
+setupStructuredData()
 
 let rafId: number | null = null
 onMounted(() => {
diff --git a/layers/composables/useSchema.ts b/layers/composables/useSchema.ts
new file mode 100644
index 0000000..08e6bf2
--- /dev/null
+++ b/layers/composables/useSchema.ts
@@ -0,0 +1,221 @@
+/**
+ * Schema.org 구조화된 데이터 유틸리티
+ *
+ * Schema.org 마크업을 쉽게 추가하고 관리하기 위한 composable
+ *
+ * @example
+ * ```ts
+ * const { addSchema, addVideoSchema, addImageGallerySchema } = useSchema()
+ *
+ * // 커스텀 스키마 추가
+ * addSchema({
+ *   '@context': 'https://schema.org',
+ *   '@type': 'Article',
+ *   headline: 'My Article'
+ * })
+ *
+ * // 비디오 스키마 추가
+ * addVideoSchema({
+ *   name: 'Video Title',
+ *   description: 'Video Description',
+ *   thumbnailUrl: 'https://example.com/thumb.jpg',
+ *   uploadDate: '2025-01-01',
+ *   contentUrl: 'https://youtube.com/watch?v=xxx'
+ * })
+ * ```
+ */
+export const useSchema = () => {
+  const gameDataStore = useGameDataStore()
+  const { gameName } = storeToRefs(gameDataStore)
+
+  /**
+   * 커스텀 Schema.org JSON-LD를 head에 추가
+   */
+  const addSchema = (schema: Record<string, any>) => {
+    useHead({
+      script: [
+        {
+          type: 'application/ld+json',
+          innerHTML: JSON.stringify(schema),
+        },
+      ],
+    })
+  }
+
+  /**
+   * VideoObject Schema 생성 및 추가
+   */
+  const addVideoSchema = (options: {
+    name: string
+    description?: string
+    thumbnailUrl: string
+    uploadDate: string
+    contentUrl: string
+    embedUrl?: string
+  }) => {
+    const schema = {
+      '@context': 'https://schema.org',
+      '@type': 'VideoObject',
+      name: options.name,
+      description: options.description || options.name,
+      thumbnailUrl: options.thumbnailUrl,
+      uploadDate: options.uploadDate,
+      contentUrl: options.contentUrl,
+      embedUrl: options.embedUrl || options.contentUrl,
+      publisher: {
+        '@type': 'Organization',
+        name: gameName.value,
+      },
+    }
+
+    addSchema(schema)
+  }
+
+  /**
+   * ImageGallery Schema 생성 및 추가
+   */
+  const addImageGallerySchema = (
+    images: Array<{
+      contentUrl: string
+      caption?: string
+    }>
+  ) => {
+    const schema = {
+      '@context': 'https://schema.org',
+      '@type': 'ImageGallery',
+      image: images.map(img => ({
+        '@type': 'ImageObject',
+        contentUrl: img.contentUrl,
+        caption: img.caption || '',
+      })),
+    }
+
+    addSchema(schema)
+  }
+
+  /**
+   * SoftwareApplication Schema 생성 및 추가
+   */
+  const addSoftwareApplicationSchema = (options: {
+    name: string
+    operatingSystem: string
+    description?: string
+    price?: string
+    priceCurrency?: string
+  }) => {
+    const schema: Record<string, any> = {
+      '@context': 'https://schema.org',
+      '@type': 'SoftwareApplication',
+      name: options.name,
+      operatingSystem: options.operatingSystem,
+      applicationCategory: 'GameApplication',
+    }
+
+    if (options.description) {
+      schema.description = options.description
+    }
+
+    if (options.price !== undefined) {
+      schema.offers = {
+        '@type': 'Offer',
+        price: options.price,
+        priceCurrency: options.priceCurrency || 'USD',
+      }
+    }
+
+    addSchema(schema)
+  }
+
+  /**
+   * Event Schema 생성 및 추가
+   */
+  const addEventSchema = (options: {
+    name: string
+    startDate: string
+    endDate?: string
+    eventStatus?:
+      | 'EventScheduled'
+      | 'EventCancelled'
+      | 'EventMovedOnline'
+      | 'EventPostponed'
+      | 'EventRescheduled'
+    description?: string
+    image?: string
+    location?: string
+  }) => {
+    const schema: Record<string, any> = {
+      '@context': 'https://schema.org',
+      '@type': 'Event',
+      name: options.name,
+      startDate: options.startDate,
+      eventStatus: `https://schema.org/${options.eventStatus || 'EventScheduled'}`,
+    }
+
+    if (options.endDate) {
+      schema.endDate = options.endDate
+    }
+
+    if (options.description) {
+      schema.description = options.description
+    }
+
+    if (options.image) {
+      schema.image = options.image
+    }
+
+    if (options.location) {
+      schema.location = {
+        '@type': 'VirtualLocation',
+        url: options.location,
+      }
+    }
+
+    addSchema(schema)
+  }
+
+  /**
+   * Article Schema 생성 및 추가
+   */
+  const addArticleSchema = (options: {
+    headline: string
+    datePublished: string
+    dateModified?: string
+    author?: string
+    description?: string
+    image?: string
+  }) => {
+    const schema: Record<string, any> = {
+      '@context': 'https://schema.org',
+      '@type': 'Article',
+      headline: options.headline,
+      datePublished: options.datePublished,
+      author: {
+        '@type': 'Organization',
+        name: options.author || gameName.value,
+      },
+    }
+
+    if (options.dateModified) {
+      schema.dateModified = options.dateModified
+    }
+
+    if (options.description) {
+      schema.description = options.description
+    }
+
+    if (options.image) {
+      schema.image = options.image
+    }
+
+    addSchema(schema)
+  }
+
+  return {
+    addSchema,
+    addVideoSchema,
+    addImageGallerySchema,
+    addSoftwareApplicationSchema,
+    addEventSchema,
+    addArticleSchema,
+  }
+}
diff --git a/layers/layouts/default.vue b/layers/layouts/default.vue
index 3003290..f2040b7 100644
--- a/layers/layouts/default.vue
+++ b/layers/layouts/default.vue
@@ -1,4 +1,70 @@
-<script setup lang="ts"></script>
+<script setup lang="ts">
+const route = useRoute()
+const { locale } = useI18n()
+const gameDataStore = useGameDataStore()
+const { gameName } = storeToRefs(gameDataStore)
+const requestURL = useRequestURL()
+
+// BreadcrumbList Schema 생성
+const breadcrumbSchema = computed(() => {
+  if (!gameName.value) return null
+
+  const baseUrl = requestURL.origin
+  console.log("🚀 ~ baseUrl:", baseUrl)
+  const pathSegments = route.path.split('/').filter(Boolean)
+  const currentLocale = pathSegments[0] || locale.value
+
+  const itemListElement: Array<{
+    '@type': string
+    position: number
+    name: string
+    item: string
+  }> = [
+    {
+      '@type': 'ListItem',
+      position: 1,
+      name: gameName.value,
+      item: `${baseUrl}/${currentLocale}`,
+    },
+  ]
+
+  // 로케일 이후의 경로 세그먼트들을 breadcrumb에 추가
+  pathSegments.slice(1).forEach((segment, index) => {
+    const path = `/${pathSegments.slice(0, index + 2).join('/')}`
+    const displayName = segment
+      .replace(/-/g, ' ')
+      .replace(/\b\w/g, l => l.toUpperCase())
+
+    itemListElement.push({
+      '@type': 'ListItem',
+      position: index + 2,
+      name: displayName,
+      item: `${baseUrl}${path}`,
+    })
+  })
+
+  console.log("🚀 ~ itemListElement:", itemListElement)
+  return {
+    '@context': 'https://schema.org',
+    '@type': 'BreadcrumbList',
+    itemListElement,
+  }
+})
+
+// Schema를 head에 추가
+watchEffect(() => {
+  if (breadcrumbSchema.value) {
+    useHead({
+      script: [
+        {
+          type: 'application/ld+json',
+          innerHTML: JSON.stringify(breadcrumbSchema.value),
+        },
+      ],
+    })
+  }
+})
+</script>
 
 <template>
   <LayoutsHeader />
diff --git a/layers/layouts/promotion.vue b/layers/layouts/promotion.vue
index 3b1480c..7b85736 100644
--- a/layers/layouts/promotion.vue
+++ b/layers/layouts/promotion.vue
@@ -1,4 +1,68 @@
-<script setup lang="ts"></script>
+<script setup lang="ts">
+const route = useRoute()
+const { locale } = useI18n()
+const gameDataStore = useGameDataStore()
+const { gameName } = storeToRefs(gameDataStore)
+const runtimeConfig = useRuntimeConfig()
+
+// BreadcrumbList Schema 생성
+const breadcrumbSchema = computed(() => {
+  if (!gameName.value || !runtimeConfig.public.baseDomain) return null
+
+  const baseUrl = `https://${runtimeConfig.public.baseDomain}`
+  const pathSegments = route.path.split('/').filter(Boolean)
+  const currentLocale = pathSegments[0] || locale.value
+
+  const itemListElement: Array<{
+    '@type': string
+    position: number
+    name: string
+    item: string
+  }> = [
+    {
+      '@type': 'ListItem',
+      position: 1,
+      name: gameName.value,
+      item: `${baseUrl}/${currentLocale}`,
+    },
+  ]
+
+  // 로케일 이후의 경로 세그먼트들을 breadcrumb에 추가
+  pathSegments.slice(1).forEach((segment, index) => {
+    const path = `/${pathSegments.slice(0, index + 2).join('/')}`
+    const displayName = segment
+      .replace(/-/g, ' ')
+      .replace(/\b\w/g, l => l.toUpperCase())
+
+    itemListElement.push({
+      '@type': 'ListItem',
+      position: index + 2,
+      name: displayName,
+      item: `${baseUrl}${path}`,
+    })
+  })
+
+  return {
+    '@context': 'https://schema.org',
+    '@type': 'BreadcrumbList',
+    itemListElement,
+  }
+})
+
+// Schema를 head에 추가
+watchEffect(() => {
+  if (breadcrumbSchema.value) {
+    useHead({
+      script: [
+        {
+          type: 'application/ld+json',
+          innerHTML: JSON.stringify(breadcrumbSchema.value),
+        },
+      ],
+    })
+  }
+})
+</script>
 
 <template>
   <LayoutsHeader />