diff --git a/src/config/entities/providers-schema.json b/src/config/entities/providers-schema.json
index 0e6170d..54ecd99 100644
--- a/src/config/entities/providers-schema.json
+++ b/src/config/entities/providers-schema.json
@@ -5,7 +5,15 @@
     "name": { "type": "string" },
     "type": {
       "type": "string",
-      "enum": ["anthropic", "azure", "bedrock", "deepseek", "gemini", "openai"]
+      "enum": [
+        "anthropic",
+        "azure",
+        "bedrock",
+        "deepseek",
+        "gemini",
+        "openai",
+        "openrouter"
+      ]
     },
     "config": { "type": "object" }
   },
@@ -37,7 +45,9 @@
     {
       "if": {
         "properties": {
-          "type": { "enum": ["anthropic", "deepseek", "gemini", "openai"] }
+          "type": {
+            "enum": ["anthropic", "deepseek", "gemini", "openai", "openrouter"]
+          }
         },
         "required": ["type"]
       },
diff --git a/src/config/entities/providers.rs b/src/config/entities/providers.rs
index 8323339..28889b0 100644
--- a/src/config/entities/providers.rs
+++ b/src/config/entities/providers.rs
@@ -34,6 +34,8 @@ pub enum ProviderConfig {
     Gemini(configs::GeminiProviderConfig),
     #[serde(rename = "openai")]
     OpenAI(configs::OpenAIProviderConfig),
+    #[serde(rename = "openrouter")]
+    OpenRouter(configs::OpenRouterProviderConfig),
 }
 
 impl ProviderConfig {
@@ -45,6 +47,7 @@ impl ProviderConfig {
             Self::DeepSeek(_) => identifiers::DEEPSEEK,
             Self::Gemini(_) => identifiers::GEMINI,
             Self::OpenAI(_) => identifiers::OPENAI,
+            Self::OpenRouter(_) => identifiers::OPENROUTER,
         }
     }
 }
@@ -131,6 +134,11 @@ mod tests {
             "secret_access_key": "secret"
         }
     }), true, None)]
+    #[case::openrouter_ok(json!({
+        "name": "openrouter-primary",
+        "type": "openrouter",
+        "config": { "api_key": "test_key" }
+    }), true, None)]
     #[case::missing_type(json!({
         "name": "openai-primary",
         "config": { "api_key": "test_key" }
diff --git a/src/gateway/providers/mod.rs b/src/gateway/providers/mod.rs
index 183b060..f4da759 100644
--- a/src/gateway/providers/mod.rs
+++ b/src/gateway/providers/mod.rs
@@ -5,6 +5,7 @@ pub mod deepseek;
 pub mod gemini;
 pub mod macros;
 pub mod openai;
+pub mod openrouter;
 
 pub use anthropic::AnthropicDef;
 pub use azure::AzureDef;
@@ -12,9 +13,10 @@ pub use bedrock::BedrockDef;
 pub use deepseek::DeepSeek;
 pub use gemini::GoogleDef;
 pub use openai::OpenAIDef;
+pub use openrouter::OpenRouter;
 
 pub mod identifiers {
-    use super::{anthropic, azure, bedrock, deepseek, gemini, openai};
+    use super::{anthropic, azure, bedrock, deepseek, gemini, openai, openrouter};
 
     pub const ANTHROPIC: &str = anthropic::IDENTIFIER;
     pub const AZURE: &str = azure::IDENTIFIER;
@@ -22,6 +24,7 @@ pub mod identifiers {
     pub const DEEPSEEK: &str = deepseek::IDENTIFIER;
     pub const GEMINI: &str = gemini::IDENTIFIER;
     pub const OPENAI: &str = openai::IDENTIFIER;
+    pub const OPENROUTER: &str = openrouter::IDENTIFIER;
 }
 
 pub mod configs {
@@ -29,6 +32,7 @@ pub mod configs {
         anthropic::AnthropicProviderConfig, azure::AzureProviderConfig,
         bedrock::BedrockProviderConfig, deepseek::DeepSeekProviderConfig,
         gemini::GeminiProviderConfig, openai::OpenAIProviderConfig,
+        openrouter::OpenRouterProviderConfig,
     };
 }
 
@@ -41,7 +45,8 @@ pub fn default_provider_registry() -> Result<ProviderRegistry> {
         .register(BedrockDef)?
         .register(DeepSeek)?
         .register(GoogleDef)?
-        .register(OpenAIDef)?;
+        .register(OpenAIDef)?
+        .register(OpenRouter)?;
     Ok(builder.build())
 }
 
@@ -59,6 +64,7 @@ mod tests {
         assert_eq!(registry.get("bedrock").unwrap().name(), "bedrock");
         assert_eq!(registry.get("gemini").unwrap().name(), "gemini");
         assert_eq!(registry.get("deepseek").unwrap().name(), "deepseek");
+        assert_eq!(registry.get("openrouter").unwrap().name(), "openrouter");
         assert!(registry.get("missing").is_none());
     }
 }
diff --git a/src/gateway/providers/openrouter.rs b/src/gateway/providers/openrouter.rs
new file mode 100644
index 0000000..a6d9358
--- /dev/null
+++ b/src/gateway/providers/openrouter.rs
@@ -0,0 +1,42 @@
+use serde::{Deserialize, Serialize};
+
+use crate::gateway::providers::macros::provider;
+
+/// Provider identifier string used to look up OpenRouter in the gateway registry.
+pub const IDENTIFIER: &str = "openrouter";
+
+/// Configuration for an OpenRouter provider deployment.
+#[derive(Debug, Clone, Serialize, Deserialize, utoipa::ToSchema)]
+pub struct OpenRouterProviderConfig {
+    pub api_key: String,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub api_base: Option<String>,
+}
+
+provider!(OpenRouter {
+    display_name: "openrouter",
+    base_url: "https://openrouter.ai/api/v1",
+    chat_path: "/chat/completions",
+    auth: bearer,
+});
+
+#[cfg(test)]
+mod tests {
+    use super::OpenRouter;
+    use crate::gateway::traits::ProviderMeta;
+
+    #[test]
+    fn provider_macro_expands_correctly() {
+        let provider = OpenRouter;
+
+        pretty_assertions::assert_eq!(provider.name(), "openrouter");
+        pretty_assertions::assert_eq!(provider.default_base_url(), "https://openrouter.ai/api/v1");
+        pretty_assertions::assert_eq!(provider.chat_endpoint_path("ignored"), "/chat/completions");
+
+        pretty_assertions::assert_eq!(
+            provider.build_url(provider.default_base_url(), "ignored"),
+            "https://openrouter.ai/api/v1/chat/completions"
+        );
+    }
+}
diff --git a/src/proxy/provider.rs b/src/proxy/provider.rs
index 6528809..bdffbf0 100644
--- a/src/proxy/provider.rs
+++ b/src/proxy/provider.rs
@@ -70,6 +70,10 @@ fn provider_auth_and_base_url(config: &ProviderConfig) -> Result<(ProviderAuth,
             ProviderAuth::ApiKey(config.api_key.clone()),
             parse_base_url(config.api_base.as_deref())?,
         ),
+        ProviderConfig::OpenRouter(config) => (
+            ProviderAuth::ApiKey(config.api_key.clone()),
+            parse_base_url(config.api_base.as_deref())?,
+        ),
     };
 
     Ok((auth, base_url_override))
@@ -155,7 +159,9 @@ mod tests {
     use super::provider_auth_and_base_url;
     use crate::{
         config::entities::providers::ProviderConfig,
-        gateway::providers::configs::{AzureProviderConfig, BedrockProviderConfig},
+        gateway::providers::configs::{
+            AzureProviderConfig, BedrockProviderConfig, OpenRouterProviderConfig,
+        },
     };
 
     #[test]
@@ -197,6 +203,22 @@ mod tests {
         );
     }
 
+    #[test]
+    fn provider_auth_and_base_url_returns_openrouter_api_key_and_optional_base_url() {
+        let config = ProviderConfig::OpenRouter(OpenRouterProviderConfig {
+            api_key: "openrouter-key".into(),
+            api_base: Some("https://openrouter.ai/api/v1".into()),
+        });
+
+        let (auth, base_url_override) = provider_auth_and_base_url(&config).unwrap();
+
+        assert_eq!(auth.api_key_for("openrouter").unwrap(), "openrouter-key");
+        assert_eq!(
+            base_url_override.as_ref().map(Url::as_str),
+            Some("https://openrouter.ai/api/v1")
+        );
+    }
+
     #[test]
     fn provider_auth_and_base_url_returns_bedrock_static_credentials() {
         let config = ProviderConfig::Bedrock(BedrockProviderConfig {
diff --git a/ui/src/components/providers/provider-form.tsx b/ui/src/components/providers/provider-form.tsx
index 7022d40..ce03047 100644
--- a/ui/src/components/providers/provider-form.tsx
+++ b/ui/src/components/providers/provider-form.tsx
@@ -24,6 +24,7 @@ import {
   TooltipContent,
   TooltipTrigger,
 } from '@/components/ui/tooltip';
+import { PROVIDER_TYPE_VARIANTS } from '@/lib/api/types';
 import type { Provider, ProviderType } from '@/lib/api/types';
 
 export interface ProviderFormProps {
@@ -36,14 +37,7 @@ export interface ProviderFormProps {
   extraActions?: React.ReactNode;
 }
 
-const PROVIDER_TYPES: ProviderType[] = [
-  'openai',
-  'azure',
-  'anthropic',
-  'gemini',
-  'deepseek',
-  'bedrock',
-];
+const PROVIDER_TYPES = Array.from(PROVIDER_TYPE_VARIANTS);
 
 function trimOptional(value: string): string | undefined {
   const trimmed = value.trim();
diff --git a/ui/src/i18n/locales/en.json b/ui/src/i18n/locales/en.json
index 37cec9c..f7ba360 100644
--- a/ui/src/i18n/locales/en.json
+++ b/ui/src/i18n/locales/en.json
@@ -148,6 +148,7 @@
       "concurrency": "Concurrency",
       "providers": {
         "openai": "OpenAI",
+        "openrouter": "OpenRouter",
         "azure": "Azure OpenAI",
         "anthropic": "Anthropic",
         "gemini": "Gemini",
@@ -216,6 +217,7 @@
       "endpointHint": "Leave blank to use the standard runtime endpoint for the selected region.",
       "types": {
         "openai": "OpenAI",
+        "openrouter": "OpenRouter",
         "azure": "Azure OpenAI",
         "anthropic": "Anthropic",
         "gemini": "Gemini",
diff --git a/ui/src/i18n/locales/zh-CN.json b/ui/src/i18n/locales/zh-CN.json
index 48c6fab..c6039ef 100644
--- a/ui/src/i18n/locales/zh-CN.json
+++ b/ui/src/i18n/locales/zh-CN.json
@@ -148,6 +148,7 @@
       "concurrency": "并发",
       "providers": {
         "openai": "OpenAI",
+        "openrouter": "OpenRouter",
         "azure": "Azure OpenAI",
         "anthropic": "Anthropic",
         "gemini": "Gemini",
@@ -216,6 +217,7 @@
       "endpointHint": "留空则根据所选 Region 使用标准运行时地址。",
       "types": {
         "openai": "OpenAI",
+        "openrouter": "OpenRouter",
         "azure": "Azure OpenAI",
         "anthropic": "Anthropic",
         "gemini": "Gemini",
diff --git a/ui/src/lib/api/types.ts b/ui/src/lib/api/types.ts
index 6ef2178..66e6510 100644
--- a/ui/src/lib/api/types.ts
+++ b/ui/src/lib/api/types.ts
@@ -37,13 +37,17 @@ export interface Model {
   rate_limit?: RateLimit;
 }
 
-export type ProviderType =
-  | 'anthropic'
-  | 'azure'
-  | 'bedrock'
-  | 'deepseek'
-  | 'gemini'
-  | 'openai';
+export const PROVIDER_TYPE_VARIANTS = [
+  'openai',
+  'openrouter',
+  'azure',
+  'anthropic',
+  'gemini',
+  'deepseek',
+  'bedrock',
+] as const;
+
+export type ProviderType = (typeof PROVIDER_TYPE_VARIANTS)[number];
 
 export interface ApiBaseProviderConfig {
   api_key: string;
@@ -90,6 +94,11 @@ export type Provider =
       type: 'openai';
       config: ApiBaseProviderConfig;
     }
+  | {
+      name: string;
+      type: 'openrouter';
+      config: ApiBaseProviderConfig;
+    }
   | {
       name: string;
       type: 'bedrock';