diff --git a/src/api_data/mod.rs b/src/api_data/mod.rs
index 143031b..fcb399b 100644
--- a/src/api_data/mod.rs
+++ b/src/api_data/mod.rs
@@ -11,4 +11,5 @@ pub mod http_error;
 pub mod login_success;
 pub mod current_user_id;
 pub mod user_info;
-pub mod custom_emoji;
\ No newline at end of file
+pub mod custom_emoji;
+pub mod res_find_user_by_virtual_directory;
\ No newline at end of file
diff --git a/src/api_data/res_find_user_by_virtual_directory.rs b/src/api_data/res_find_user_by_virtual_directory.rs
new file mode 100644
index 0000000..02cee19
--- /dev/null
+++ b/src/api_data/res_find_user_by_virtual_directory.rs
@@ -0,0 +1,22 @@
+//! API output of finding user by virtual directory
+//!
+//! @author Pierre Hubert
+
+use crate::data::user::UserID;
+use serde::Serialize;
+
+
+#[derive(Serialize)]
+#[allow(non_snake_case)]
+pub struct FindUserByVirtualDirectoryAPIResult {
+    userID: u64
+}
+
+impl FindUserByVirtualDirectoryAPIResult {
+    /// Construct a new `FindUserByVirtualDirectoryAPIResult` instance
+    pub fn new(user_id: UserID) -> FindUserByVirtualDirectoryAPIResult {
+        FindUserByVirtualDirectoryAPIResult {
+            userID: user_id as u64
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/controllers/virtual_directory_controller.rs b/src/controllers/virtual_directory_controller.rs
index 890919b..d5dad69 100644
--- a/src/controllers/virtual_directory_controller.rs
+++ b/src/controllers/virtual_directory_controller.rs
@@ -4,11 +4,17 @@
 
 use crate::data::http_request_handler::HttpRequestHandler;
 use crate::controllers::routes::RequestResult;
+use crate::helpers::user_helper;
+use crate::api_data::res_find_user_by_virtual_directory::FindUserByVirtualDirectoryAPIResult;
 
 /// Find a user by its virtual directory
 pub fn find_user(r: &mut HttpRequestHandler) -> RequestResult {
-
     let directory = r.post_virtual_directory("subfolder")?;
 
-    r.success("implement it")
+    let user = r.ok_or_not_found(
+        user_helper::find_user_by_virtual_directory(&directory),
+        "No user was found with this subfolder!"
+    )?;
+
+    r.set_response(FindUserByVirtualDirectoryAPIResult::new(user.id))
 }
\ No newline at end of file
diff --git a/src/helpers/user_helper.rs b/src/helpers/user_helper.rs
index a9060cb..d6f86b6 100644
--- a/src/helpers/user_helper.rs
+++ b/src/helpers/user_helper.rs
@@ -21,6 +21,12 @@ pub fn find_user_by_email(email: &str) -> ResultBoxError<User> {
         database::QueryInfo::new(USERS_TABLE).cond("mail", email))
 }
 
+/// Get & return information about a user based on his virtual directory
+pub fn find_user_by_virtual_directory(dir: &str) -> ResultBoxError<User> {
+    exec_get_user_query(
+        database::QueryInfo::new(USERS_TABLE).cond("sous_repertoire", dir))
+}
+
 /// Execute query & return result
 fn exec_get_user_query(query: database::QueryInfo) -> ResultBoxError<User> {
     database::query_row(query, |res| {