diff --git a/src/lib/arg-parsing.ts b/src/lib/arg-parsing.ts
index 588de7738..a0e6c9273 100644
--- a/src/lib/arg-parsing.ts
+++ b/src/lib/arg-parsing.ts
@@ -369,6 +369,12 @@ export type ParsedOrgProject =
       projectSlug: string;
       /** True if project slug was normalized */
       normalized?: boolean;
+      /**
+       * Organization slug to scope the search to, when the caller provided
+       * one (e.g. "org/My Project"). When unset the search spans all
+       * accessible organizations.
+       */
+      org?: string;
       /**
        * Pre-normalization input when {@link normalized} is `true`.
        * Used by the resolution layer to produce user-friendly messages
@@ -536,6 +542,18 @@ function parseSlashOrgProject(input: string): ParsedOrgProject {
 
   // "sentry/cli" → explicit org and project
   rejectAtSelector(rawProject, "project slug");
+  if (looksLikeDisplayName(rawProject)) {
+    // Spaces → display name, not a slug. Skip slug validation and let the
+    // resolution layer do a fuzzy name-based search (mirrors the bare-slug
+    // and leading-slash paths). Prevents a hard ValidationError when callers
+    // pass a project display name in "org/project" form (CLI-1RA).
+    return {
+      type: "project-search",
+      projectSlug: rawProject,
+      originalSlug: rawProject,
+      org: no.slug,
+    };
+  }
   const np = normalizeSlug(rawProject);
   validateResourceId(np.slug, "project slug");
   const normalized = no.normalized || np.normalized;
diff --git a/src/lib/resolve-target.ts b/src/lib/resolve-target.ts
index 9f1b97b0e..300ce6d41 100644
--- a/src/lib/resolve-target.ts
+++ b/src/lib/resolve-target.ts
@@ -1640,10 +1640,17 @@ export async function resolveOrgProjectTarget(
     case "project-search": {
       const displaySlug = parsed.originalSlug ?? parsed.projectSlug;
       const isDisplayName = parsed.originalSlug !== undefined;
-      const { projects, orgs } = isDisplayName
+      const { projects, orgs: foundOrgs } = isDisplayName
         ? { projects: [], orgs: await listOrganizations() }
         : await findProjectsBySlug(parsed.projectSlug);
 
+      // When the caller provided an org (e.g. "org/My Project"), scope the
+      // display-name search to that org instead of all accessible orgs.
+      const orgs =
+        isDisplayName && parsed.org !== undefined
+          ? foundOrgs.filter((o) => o.slug === parsed.org)
+          : foundOrgs;
+
       if (projects.length === 0) {
         const outcome = await triageProjectNotFound(
           parsed.projectSlug,