diff --git a/dnsapi/dns_ionos_cloud.sh b/dnsapi/dns_ionos_cloud.sh
new file mode 100644
index 0000000000..fa229e03e0
--- /dev/null
+++ b/dnsapi/dns_ionos_cloud.sh
@@ -0,0 +1,145 @@
+#!/usr/bin/env sh
+
+# Supports IONOS Cloud DNS API v1.15.4
+#
+# Usage:
+#   Export IONOS_TOKEN before calling acme.sh:
+#   $ export IONOS_TOKEN="..."
+#
+#   $ acme.sh --issue --dns dns_ionos_cloud ...
+
+IONOS_CLOUD_API="https://dns.de-fra.ionos.com"
+IONOS_CLOUD_ROUTE_ZONES="/zones"
+
+dns_ionos_cloud_add() {
+  fulldomain=$1
+  txtvalue=$2
+
+  if ! _ionos_init; then
+    return 1
+  fi
+
+  _record_name=$(printf "%s" "$fulldomain" | cut -d . -f 1)
+  _body="{\"properties\":{\"name\":\"$_record_name\", \"type\":\"TXT\", \"content\":\"$txtvalue\"}}"
+
+  if _ionos_cloud_rest POST "$IONOS_CLOUD_ROUTE_ZONES/$_zone_id/records" "$_body" && [ "$_code" = "202" ]; then
+    _info "TXT record has been created successfully."
+    return 0
+  fi
+
+  return 1
+}
+
+dns_ionos_cloud_rm() {
+  fulldomain=$1
+  txtvalue=$2
+
+  if ! _ionos_init; then
+    return 1
+  fi
+
+  if ! _ionos_cloud_get_record "$_zone_id" "$txtvalue" "$fulldomain"; then
+    _err "Could not find _acme-challenge TXT record."
+    return 1
+  fi
+
+  if _ionos_cloud_rest DELETE "$IONOS_CLOUD_ROUTE_ZONES/$_zone_id/records/$_record_id" && [ "$_code" = "202" ]; then
+    _info "TXT record has been deleted successfully."
+    return 0
+  fi
+
+  return 1
+}
+
+_ionos_init() {
+  IONOS_TOKEN="${IONOS_TOKEN:-$(_readaccountconf_mutable IONOS_TOKEN)}"
+
+  if [ -z "$IONOS_TOKEN" ]; then
+    _err "You didn't specify an IONOS token yet."
+    _err "Read https://api.ionos.com/docs/authentication/v1/#tag/tokens/operation/tokensGenerate to learn how to get a token."
+    _err "You need to set it before calling acme.sh:"
+    _err "\$ export IONOS_TOKEN=\"...\""
+    _err "\$ acme.sh --issue -d ... --dns dns_ionos_cloud"
+    return 1
+  fi
+
+  _saveaccountconf_mutable IONOS_TOKEN "$IONOS_TOKEN"
+
+  if ! _get_cloud_zone "$fulldomain"; then
+    _err "Cannot find zone $zone in your IONOS account."
+    return 1
+  fi
+
+  return 0
+}
+
+_get_cloud_zone() {
+  domain=$1
+  zone=$(printf "%s" "$domain" | cut -d . -f 2-)
+
+  if _ionos_cloud_rest GET "$IONOS_CLOUD_ROUTE_ZONES?filter.zoneName=$zone"; then
+    _response="$(echo "$_response" | tr -d "\n")"
+
+    _zone_list_items=$(echo "$_response" | _egrep_o "\"items\":.*")
+
+    _zone_id=$(printf "%s\n" "$_zone_list_items" | _egrep_o "\"id\":\"[a-fA-F0-9\-]*\"" | _head_n 1 | cut -d : -f 2 | tr -d '\"')
+    if [ "$_zone_id" ]; then
+      return 0
+    fi
+  fi
+
+  return 1
+}
+
+_ionos_cloud_get_record() {
+  zone_id=$1
+  txtrecord=$2
+  # this is to transform the domain to lower case
+  fulldomain=$(printf "%s" "$3" | _lower_case)
+  # this is to transform record name to lower case
+  # IONOS Cloud API transforms all record names to lower case
+  _record_name=$(printf "%s" "$fulldomain" | cut -d . -f 1 | _lower_case)
+
+  if _ionos_cloud_rest GET "$IONOS_CLOUD_ROUTE_ZONES/$zone_id/records"; then
+    _response="$(echo "$_response" | tr -d "\n")"
+
+    pattern="\{\"id\":\"[a-fA-F0-9\-]*\",\"type\":\"record\",\"href\":\"/zones/$zone_id/records/[a-fA-F0-9\-]*\",\"metadata\":\{\"createdDate\":\"[A-Z0-9\:\.\-]*\",\"lastModifiedDate\":\"[A-Z0-9\:\.\-]*\",\"fqdn\":\"$fulldomain\",\"state\":\"AVAILABLE\",\"zoneId\":\"$zone_id\"\},\"properties\":\{\"content\":\"$txtrecord\",\"enabled\":true,\"name\":\"$_record_name\",\"priority\":[0-9]*,\"ttl\":[0-9]*,\"type\":\"TXT\"\}\}"
+
+    _record="$(echo "$_response" | _egrep_o "$pattern")"
+    if [ "$_record" ]; then
+      _record_id=$(printf "%s\n" "$_record" | _egrep_o "\"id\":\"[a-fA-F0-9\-]*\"" | _head_n 1 | cut -d : -f 2 | tr -d '\"')
+      return 0
+    fi
+  fi
+
+  return 1
+}
+
+_ionos_cloud_rest() {
+  method="$1"
+  route="$2"
+  data="$3"
+
+  export _H1="Authorization: Bearer $IONOS_TOKEN"
+
+  # clear headers
+  : >"$HTTP_HEADER"
+
+  if [ "$method" != "GET" ]; then
+    _response="$(_post "$data" "$IONOS_CLOUD_API$route" "" "$method" "application/json")"
+  else
+    _response="$(_get "$IONOS_CLOUD_API$route")"
+  fi
+
+  _code="$(grep "^HTTP" "$HTTP_HEADER" | _tail_n 1 | cut -d " " -f 2 | tr -d "\\r\\n")"
+
+  if [ "$?" != "0" ]; then
+    _err "Error $route: $_response"
+    return 1
+  fi
+
+  _debug2 "_response" "$_response"
+  _debug2 "_code" "$_code"
+
+  return 0
+}