diff --git a/judge/management/commands/submit_polygon_solutions.py b/judge/management/commands/submit_polygon_solutions.py
new file mode 100644
index 000000000..0220374c9
--- /dev/null
+++ b/judge/management/commands/submit_polygon_solutions.py
@@ -0,0 +1,78 @@
+import os
+import zipfile
+
+from django.core.management.base import BaseCommand, CommandError
+from django.db import transaction
+from django.utils import translation
+from lxml import etree as ET
+
+from judge.models import Language, Problem, Profile, Submission, SubmissionSource
+
+
+class Command(BaseCommand):
+    help = 'submit solutions from Polygon package'
+
+    def add_arguments(self, parser):
+        parser.add_argument('package', help='path to package in zip format')
+        parser.add_argument('code', help='problem code')
+        parser.add_argument('submitter', help='username of submitter')
+
+    def handle(self, *args, **options):
+        # Force using English
+        translation.activate('en')
+
+        problem = Problem.objects.get(code=options['code'])
+        submitter = Profile.objects.get(user__username=options['submitter'])
+
+        package = zipfile.ZipFile(options['package'], 'r')
+        if 'problem.xml' not in package.namelist():
+            raise CommandError('problem.xml not found')
+
+        root = ET.fromstring(package.read('problem.xml'))
+        solutions = root.find('.//solutions')
+        for solution in solutions.getchildren():
+            source = solution.find('source')
+            source_path = source.get('path')
+            source_lang = source.get('type')
+
+            comments = [os.path.basename(source_path), f'overall: {solution.get("tag")}']
+
+            extra_tags = solution.find('extra-tags')
+            if extra_tags is not None:
+                for extra_tag in extra_tags.getchildren():
+                    group = extra_tag.get('group')
+                    tag = extra_tag.get('tag')
+                    if group is not None:
+                        comments.append(f'group {group}: {tag}')
+
+            if source_lang.startswith('cpp'):
+                header = '/*\n' + '\n'.join(comments) + '\n*/\n\n'
+                source_code = header + package.read(source_path).decode('utf-8')
+                language = Language.objects.get(key='CPP17')
+            elif source_lang.startswith('java'):
+                header = '/*\n' + '\n'.join(comments) + '\n*/\n\n'
+                source_code = header + package.read(source_path).decode('utf-8')
+                language = Language.objects.get(key='JAVA')
+            elif source_lang.startswith('python'):
+                header = '"""\n' + '\n'.join(comments) + '\n"""\n\n'
+                source_code = header + package.read(source_path).decode('utf-8')
+                if source_lang == 'python.pypy2':
+                    language = Language.objects.get(key='PYPY')
+                elif source_lang == 'python.pypy3':
+                    language = Language.objects.get(key='PYPY3')
+                elif source_lang == 'python.2':
+                    language = Language.objects.get(key='PY2')
+                else:
+                    language = Language.objects.get(key='PY3')
+            else:
+                print('Unsupported language', source_lang)
+                continue
+
+            with transaction.atomic():
+                submission = Submission(user=submitter, problem=problem, language=language)
+                submission.save()
+                source = SubmissionSource(submission=submission, source=source_code)
+                source.save()
+
+            submission.source = source
+            submission.judge(force_judge=True)