diff --git a/src/Bundle/ChillPersonBundle/Export/Export/ListPersonDuplicate.php b/src/Bundle/ChillPersonBundle/Export/Export/ListPersonDuplicate.php
new file mode 100644
index 000000000..bf561705b
--- /dev/null
+++ b/src/Bundle/ChillPersonBundle/Export/Export/ListPersonDuplicate.php
@@ -0,0 +1,201 @@
+<?php
+
+namespace Chill\PersonBundle\Export\Export;
+
+use Chill\MainBundle\Entity\Center;
+use Chill\MainBundle\Export\DirectExportInterface;
+use Chill\MainBundle\Export\ExportElementValidatedInterface;
+use Chill\MainBundle\Templating\TranslatableStringHelper;
+use Chill\PersonBundle\Export\Declarations;
+use Chill\PersonBundle\Security\Authorization\PersonVoter;
+use Doctrine\ORM\EntityManagerInterface;
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+use PhpOffice\PhpSpreadsheet\Writer\Xlsx;
+use Symfony\Component\Form\Extension\Core\Type\NumberType;
+use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\HttpFoundation\BinaryFileResponse;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\HttpFoundation\ResponseHeaderBag;
+use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
+use Symfony\Component\Security\Core\Role\Role;
+use Symfony\Component\Translation\TranslatorInterface;
+use Symfony\Component\Validator\Constraints\Range;
+use Symfony\Component\Validator\Context\ExecutionContextInterface;
+
+/**
+ * Render a list of duplicate peoples
+ */
+class ListPersonDuplicate implements DirectExportInterface, ExportElementValidatedInterface
+{
+    /**
+     *
+     * @var EntityManagerInterface
+     */
+    protected $entityManager;
+
+    /**
+     * @var \Symfony\Component\Translation\TranslatorInterface
+     */
+    private $translator;
+
+    /**
+     * @var \Symfony\Component\Routing\Generator\UrlGeneratorInterface
+     */
+    private $router;
+
+    /**
+     * @var float
+     */
+    private const PRECISION_DEFAULT_VALUE = 0.7;
+
+    public function __construct(
+      EntityManagerInterface $em,
+      TranslatorInterface $translator,
+      UrlGeneratorInterface $router
+    ) {
+        $this->entityManager = $em;
+        $this->translator = $translator;
+        $this->router = $router;
+    }
+
+    /**
+     * {@inheritDoc}
+     *
+     * @return string
+     */
+    public function getTitle()
+    {
+        return "List duplicates";
+    }
+
+    /**
+     * {@inheritDoc}
+     *
+     * @return string
+     */
+    public function getDescription()
+    {
+        return "Create a list of duplicate people.";
+    }
+
+    /**
+     * {@inheritDoc}
+     *
+     * @param FormBuilderInterface $builder
+     */
+    public function buildForm(FormBuilderInterface $builder)
+    {
+        $builder->add('precision', NumberType::class, [
+            'label' => 'Duplicate similarity',
+            'data' => self::PRECISION_DEFAULT_VALUE,
+            'constraints' => [
+                new Range([
+                    'min' => 0.1,
+                    'max' => 1.0,
+                ])
+            ]
+        ]);
+    }
+
+    public function validateForm($data, ExecutionContextInterface $context)
+    {
+
+    }
+
+    public function generate(array $acl, array $data = []): Response
+    {
+        $values = [];
+        $values[] = $this->getHeaders();
+
+        $result = $this->getResult($acl, $data);
+        foreach ($result as $row) {
+            $values[] = [
+                $row['id1'],
+                $row['firstname1'],
+                $row['lastname1'],
+                $this->router->generate('chill_person_view', ['person_id' => $row['id1']], UrlGeneratorInterface::ABSOLUTE_URL),
+                $row['id2'],
+                $row['firstname2'],
+                $row['lastname2'],
+                $this->router->generate('chill_person_view', ['person_id' => $row['id2']], UrlGeneratorInterface::ABSOLUTE_URL),
+            ];
+        }
+
+        $spreadsheet = new Spreadsheet();
+        $spreadsheet->getActiveSheet()->fromArray($values);
+
+        // Make links clickable
+        for ($i = 1; $i <= $spreadsheet->getActiveSheet()->getHighestDataRow(); $i++) {
+            $spreadsheet->getActiveSheet()->getCell('D'.$i)->getHyperlink()
+              ->setUrl($spreadsheet->getActiveSheet()->getCell('D'.$i)->getValue());
+            $spreadsheet->getActiveSheet()->getCell('H'.$i)->getHyperlink()
+              ->setUrl($spreadsheet->getActiveSheet()->getCell('H'.$i)->getValue());
+        }
+
+        $writer = new Xlsx($spreadsheet);
+        $temp_file = sys_get_temp_dir().'/'.uniqid('export_').'.xlsx';
+        $writer->save($temp_file);
+
+        $response = new BinaryFileResponse($temp_file);
+        $response->headers->set('Content-Type', 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
+        $response->setContentDisposition(ResponseHeaderBag::DISPOSITION_ATTACHMENT, 'export_duplicate.xlsx');
+
+        return $response;
+    }
+
+    protected function getResult($acl, $data = [])
+    {
+        $precision = $data['precision'] ?? self::PRECISION_DEFAULT_VALUE;
+
+        $baseSql = 'SELECT
+                p.id as id1, p.firstname as firstname1, p.lastname as lastname1, p.fullnamecanonical as fullnamecanonical1,
+                p2.id as id2, p2.firstname as firstname2, p2.lastname as lastname2, p2.fullnamecanonical as fullnamecanonical2,
+                SIMILARITY(p.fullnamecanonical, p2.fullnamecanonical) AS "similarity nom + prenom",
+                SIMILARITY(p.lastname, p2.lastname) AS "similarity nom",
+                SIMILARITY(p.firstname, p2.firstname) AS "similarity prenom"
+            FROM chill_person_person AS p 
+            JOIN chill_person_person AS p2 
+                ON p.id < p2.id 
+                AND (
+                     SIMILARITY(p.fullnamecanonical, p2.fullnamecanonical) > ?
+                     OR (UNACCENT(LOWER(p.firstname)) = UNACCENT(LOWER(p2.lastname))
+                        AND UNACCENT(LOWER(p.lastname))  = UNACCENT(LOWER(p2.firstname)))
+                    )
+                AND p.center_id = p2.center_id
+            WHERE NOT EXISTS (
+                SELECT id 
+                FROM chill_person_not_duplicate as pnd 
+                WHERE (pnd.person1_id = p.id 
+                    AND pnd.person2_id = p2.id)
+                OR (pnd.person2_id = p.id 
+                    AND pnd.person1_id = p2.id)
+            )
+            AND p.center_id IN (%centers%)
+            ORDER BY p.fullnamecanonical, p.id, p2.id';
+
+        $centersId = array_map(function ($r) { return $r['center']->getId(); }, $acl);
+        $sql = strtr($baseSql, ['%centers%' => implode(', ', array_fill(0, count($centersId), '?'))]);
+
+        $statement = $this->entityManager->getConnection()->prepare($sql);
+        return $statement->executeQuery([$precision, ...$centersId]);
+    }
+
+    protected function getHeaders(): array
+    {
+        return [
+          $this->translator->trans('Person folder number'),
+          $this->translator->trans('Last name'),
+          $this->translator->trans('First name'),
+          $this->translator->trans('Open person folder'),
+          $this->translator->trans('Person folder number'),
+          $this->translator->trans('Last name'),
+          $this->translator->trans('First name'),
+          $this->translator->trans('Open person folder'),
+        ];
+    }
+
+    public function requiredRole(): Role
+    {
+        return new Role(PersonVoter::DUPLICATE);
+    }
+}
diff --git a/src/Bundle/ChillPersonBundle/Resources/config/services/exports.yml b/src/Bundle/ChillPersonBundle/Resources/config/services/exports.yml
index 9a20898e6..b87bdeaaa 100644
--- a/src/Bundle/ChillPersonBundle/Resources/config/services/exports.yml
+++ b/src/Bundle/ChillPersonBundle/Resources/config/services/exports.yml
@@ -15,7 +15,16 @@ services:
             - "@chill.custom_field.provider"
         tags:
             - { name: chill.export, alias: list_person }
-            
+
+    chill.person.export.list_person.duplicate:
+        class: Chill\PersonBundle\Export\Export\ListPersonDuplicate
+        arguments:
+            - "@doctrine.orm.entity_manager"
+            - "@translator"
+            - "@router"
+        tags:
+            - { name: chill.export, alias: list_person_duplicate }
+
     chill.person.export.filter_gender:
         class: Chill\PersonBundle\Export\Filter\GenderFilter
         arguments:
diff --git a/src/Bundle/ChillPersonBundle/Resources/translations/messages.fr.yml b/src/Bundle/ChillPersonBundle/Resources/translations/messages.fr.yml
index 0aa974e1e..b12e2f41a 100644
--- a/src/Bundle/ChillPersonBundle/Resources/translations/messages.fr.yml
+++ b/src/Bundle/ChillPersonBundle/Resources/translations/messages.fr.yml
@@ -208,6 +208,12 @@ List peoples: Liste des personnes
 Create a list of people according to various filters.: Crée une liste des personnes selon différents filtres.
 Fields to include in export: Champs à inclure dans l'export
 Address valid at this date: Addresse valide à cette date
+### export duplicate
+List duplicates: Liste des doublons potentiels
+Create a list of duplicate people.: Liste des doublons potentiels, sur base du degré de similarité du nom et prénom des personnes
+Person folder number: Identifiant du dossier
+Open person folder: Ouvrir le dossier
+Duplicate similarity: Degré de similarité des noms et prénoms
 
 ## filters
 Filter by person gender: Filtrer par genre de la personne