diff --git a/umap/static/umap/js/modules/autocomplete.js b/umap/static/umap/js/modules/autocomplete.js
index 31d5d196..e693d6be 100644
--- a/umap/static/umap/js/modules/autocomplete.js
+++ b/umap/static/umap/js/modules/autocomplete.js
@@ -6,6 +6,7 @@ import {
 } from '../../vendors/leaflet/leaflet-src.esm.js'
 import { translate } from './i18n.js'
 import { Request, ServerRequest } from './request.js'
+import { escapeHTML, generateId } from './utils.js'
 
 export class BaseAutocomplete {
   constructor(el, options) {
@@ -46,7 +47,7 @@ export class BaseAutocomplete {
       placeholder: this.options.placeholder,
       autocomplete: 'off',
       className: this.options.className,
-      name: this.options.name || 'autocomplete'
+      name: this.options.name || 'autocomplete',
     })
     DomEvent.on(this.input, 'keydown', this.onKeyDown, this)
     DomEvent.on(this.input, 'keyup', this.onKeyUp, this)
@@ -350,3 +351,19 @@ export const MultipleMixin = (Base) =>
 export class AjaxAutocompleteMultiple extends MultipleMixin(BaseServerAjax) {}
 
 export class AjaxAutocomplete extends SingleMixin(BaseServerAjax) {}
+
+export class AutocompleteDatalist {
+  constructor(input) {
+    this.input = input
+    this.datalist = document.createElement('datalist')
+    this.datalist.id = generateId()
+    this.input.setAttribute('list', this.datalist.id)
+    this.input.parentElement.appendChild(this.datalist)
+  }
+
+  set suggestions(values) {
+    this.datalist.innerHTML = values
+      .map((value) => `<option>${escapeHTML(value)}</option>`)
+      .join('')
+  }
+}
diff --git a/umap/static/umap/js/modules/global.js b/umap/static/umap/js/modules/global.js
index 11b62b2b..af96433e 100644
--- a/umap/static/umap/js/modules/global.js
+++ b/umap/static/umap/js/modules/global.js
@@ -3,7 +3,7 @@ import {
   uMapAlertConflict as AlertConflict,
   uMapAlertCreation as AlertCreation,
 } from '../components/alerts/alert.js'
-import { AjaxAutocomplete, AjaxAutocompleteMultiple } from './autocomplete.js'
+import { AjaxAutocomplete, AjaxAutocompleteMultiple, AutocompleteDatalist } from './autocomplete.js'
 import Browser from './browser.js'
 import Caption from './caption.js'
 import Facets from './facets.js'
@@ -33,6 +33,7 @@ window.U = {
   AlertConflict,
   AjaxAutocomplete,
   AjaxAutocompleteMultiple,
+  AutocompleteDatalist,
   Browser,
   Caption,
   Dialog,
diff --git a/umap/static/umap/js/modules/rules.js b/umap/static/umap/js/modules/rules.js
index 518339c1..0c945059 100644
--- a/umap/static/umap/js/modules/rules.js
+++ b/umap/static/umap/js/modules/rules.js
@@ -1,6 +1,7 @@
 import { DomEvent, DomUtil, stamp } from '../../vendors/leaflet/leaflet-src.esm.js'
 import { translate } from './i18n.js'
 import * as Utils from './utils.js'
+import { AutocompleteDatalist } from './autocomplete.js'
 
 class Rule {
   get condition() {
@@ -123,7 +124,18 @@ class Rule {
     const builder = new U.FormBuilder(this, options)
     const defaultShapeProperties = DomUtil.add('div', '', container)
     defaultShapeProperties.appendChild(builder.build())
-
+    const autocomplete = new AutocompleteDatalist(builder.helpers.condition.input)
+    const properties = this.map.allProperties()
+    autocomplete.suggestions = properties
+    autocomplete.input.addEventListener('input', (event) => {
+      const value = event.target.value
+      if (properties.includes(value)) {
+        autocomplete.suggestions = [`${value}=`, `${value}!=`, `${value}>`, `${value}<`]
+      } else if (value.endsWith('=')) {
+        const key = value.split('!')[0].split('=')[0]
+        autocomplete.suggestions = this.map.sortedValues(key).map((str) => `${value}${str || ''}`)
+      }
+    })
     this.map.editPanel.open({ content: container })
   }
 
diff --git a/umap/static/umap/js/umap.js b/umap/static/umap/js/umap.js
index 021734f0..0d9af4e2 100644
--- a/umap/static/umap/js/umap.js
+++ b/umap/static/umap/js/umap.js
@@ -1895,4 +1895,15 @@ U.Map = L.Map.extend({
       })
     await this.server.post(sendLink, {}, formData)
   },
+
+  allProperties: function () {
+    return [].concat(...this.datalayers_index.map((dl) => dl._propertiesIndex))
+  },
+
+  sortedValues: function (property) {
+    return []
+      .concat(...this.datalayers_index.map((dl) => dl.sortedValues(property)))
+      .filter((val, idx, arr) => arr.indexOf(val) === idx)
+      .sort(U.Utils.naturalSort)
+  },
 })
diff --git a/umap/static/umap/js/umap.layer.js b/umap/static/umap/js/umap.layer.js
index c7d4d1a3..0eee5b9e 100644
--- a/umap/static/umap/js/umap.layer.js
+++ b/umap/static/umap/js/umap.layer.js
@@ -1052,6 +1052,13 @@ U.DataLayer = L.Evented.extend({
     if (idx !== -1) this._propertiesIndex.splice(idx, 1)
   },
 
+  sortedValues: function (property) {
+    return Object.values(this._layers)
+      .map((feature) => feature.properties[property])
+      .filter((val, idx, arr) => arr.indexOf(val) === idx)
+      .sort(U.Utils.naturalSort)
+  },
+
   addData: function (geojson, sync) {
     try {
       // Do not fail if remote data is somehow invalid,
diff --git a/umap/tests/integration/test_conditional_rules.py b/umap/tests/integration/test_conditional_rules.py
index d0c9cc03..3db4b5b4 100644
--- a/umap/tests/integration/test_conditional_rules.py
+++ b/umap/tests/integration/test_conditional_rules.py
@@ -199,3 +199,24 @@ def test_can_deactive_rule_from_list(live_server, page, openmap):
     page.get_by_role("button", name="Show/hide layer").click()
     colors = getColors(markers)
     assert colors.count("rgb(240, 248, 255)") == 2
+
+
+def test_autocomplete_datalist(live_server, page, openmap):
+    DataLayerFactory(map=openmap, data=DATALAYER_DATA1)
+    page.goto(f"{live_server.url}{openmap.get_absolute_url()}?edit#6/48.948/1.670")
+    page.get_by_role("link", name="Map advanced properties").click()
+    page.locator("summary").filter(has_text="Conditional style rules").click()
+    page.get_by_role("button", name="Add rule").click()
+    panel = page.locator(".panel.right.on")
+    datalist = panel.locator(".umap-field-condition datalist option")
+    expect(datalist).to_have_count(5)
+    values = {option.inner_text() for option in datalist.all()}
+    assert values == {"myboolean", "mytype", "mynumber", "mydate", "name"}
+    page.get_by_placeholder("key=value or key!=value").fill("mytype")
+    expect(datalist).to_have_count(4)
+    values = {option.inner_text() for option in datalist.all()}
+    assert values == {"mytype=", "mytype!=", "mytype>", "mytype<"}
+    page.get_by_placeholder("key=value or key!=value").fill("mytype=")
+    expect(datalist).to_have_count(2)
+    values = {option.inner_text() for option in datalist.all()}
+    assert values == {"mytype=even", "mytype=odd"}