diff --git a/e2e/nx-run/src/run.test.ts b/e2e/nx-run/src/run.test.ts
index 88b7cc4018..3e4ff90865 100644
--- a/e2e/nx-run/src/run.test.ts
+++ b/e2e/nx-run/src/run.test.ts
@@ -512,7 +512,8 @@ describe('Nx Running Tests', () => {
       runCLI(`generate @nrwl/web:app ${myapp2}`);
 
       let outputs = runCLI(
-        `run-many -t build test -p ${myapp1} ${myapp2} --ci`
+        // Options with lists can be specified using multiple args or with a delimiter (comma or space).
+        `run-many -t build -t test -p ${myapp1} ${myapp2} --ci`
       );
       expect(outputs).toContain('Running targets build, test for 2 projects:');
 
diff --git a/packages/nx/src/command-line/nx-commands.ts b/packages/nx/src/command-line/nx-commands.ts
index 3016c7b6ad..f31e6410d3 100644
--- a/packages/nx/src/command-line/nx-commands.ts
+++ b/packages/nx/src/command-line/nx-commands.ts
@@ -1017,10 +1017,13 @@ function withWatchOptions(yargs: yargs.Argv) {
     }, true);
 }
 
-function parseCSV(args: string) {
+function parseCSV(args: string[] | string) {
   if (!args) {
     return args;
   }
+  if (Array.isArray(args)) {
+    return args;
+  }
   return args.split(',');
 }