diff --git a/README.md b/README.md
index 0d474232..0ba5eeb1 100644
--- a/README.md
+++ b/README.md
@@ -323,6 +323,7 @@ You don't have to do anything manually!
 1. EUSERV.EU (https://www.euserv.eu)
 1. DNSPod.com API (https://www.dnspod.com)
 1. Google Cloud DNS API
+1. ConoHa (https://www.conoha.jp)
 1. netcup DNS API (https://www.netcup.de)
 
 And: 
diff --git a/dnsapi/README.md b/dnsapi/README.md
index d31a1617..47862d6c 100644
--- a/dnsapi/README.md
+++ b/dnsapi/README.md
@@ -936,7 +936,25 @@ acme.sh --issue --dns dns_gcloud -d example.com -d '*.example.com'
 
 `dns_gcloud` also supports [DNS alias mode](https://github.com/Neilpang/acme.sh/wiki/DNS-alias-mode).
 
-## 50. Use netcup DNS API to automatically issue cert
+## 50. Use ConoHa API
+
+First you need to login to your ConoHa account to get your API credentials.
+
+```
+export CONOHA_Username="xxxxxx"
+export CONOHA_Password="xxxxxx"
+export CONOHA_TenantId="xxxxxx"
+export CONOHA_IdentityServiceApi="https://identity.xxxx.conoha.io/v2.0"
+```
+
+To issue a cert:
+```
+acme.sh --issue --dns dns_conoha -d example.com -d www.example.com
+```
+
+The `CONOHA_Username`, `CONOHA_Password`, `CONOHA_TenantId` and `CONOHA_IdentityServiceApi` will be saved in `~/.acme.sh/account.conf` and will be reused when needed.
+
+## 51. Use netcup DNS API to automatically issue cert
 
 First you need to login in your CCP account to get your API Key and API Password.
 ```
diff --git a/dnsapi/dns_conoha.sh b/dnsapi/dns_conoha.sh
new file mode 100755
index 00000000..d3bee130
--- /dev/null
+++ b/dnsapi/dns_conoha.sh
@@ -0,0 +1,253 @@
+#!/usr/bin/env sh
+
+CONOHA_DNS_EP_PREFIX_REGEXP="https://dns-service\."
+
+########  Public functions #####################
+
+#Usage: dns_conoha_add   _acme-challenge.www.domain.com   "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
+dns_conoha_add() {
+  fulldomain=$1
+  txtvalue=$2
+  _info "Using conoha"
+  _debug fulldomain "$fulldomain"
+  _debug txtvalue "$txtvalue"
+
+  _debug "Check uesrname and password"
+  CONOHA_Username="${CONOHA_Username:-$(_readaccountconf_mutable CONOHA_Username)}"
+  CONOHA_Password="${CONOHA_Password:-$(_readaccountconf_mutable CONOHA_Password)}"
+  CONOHA_TenantId="${CONOHA_TenantId:-$(_readaccountconf_mutable CONOHA_TenantId)}"
+  CONOHA_IdentityServiceApi="${CONOHA_IdentityServiceApi:-$(_readaccountconf_mutable CONOHA_IdentityServiceApi)}"
+  if [ -z "$CONOHA_Username" ] || [ -z "$CONOHA_Password" ] || [ -z "$CONOHA_TenantId" ] || [ -z "$CONOHA_IdentityServiceApi" ]; then
+    CONOHA_Username=""
+    CONOHA_Password=""
+    CONOHA_TenantId=""
+    CONOHA_IdentityServiceApi=""
+    _err "You didn't specify a conoha api username and password yet."
+    _err "Please create the user and try again."
+    return 1
+  fi
+
+  _saveaccountconf_mutable CONOHA_Username "$CONOHA_Username"
+  _saveaccountconf_mutable CONOHA_Password "$CONOHA_Password"
+  _saveaccountconf_mutable CONOHA_TenantId "$CONOHA_TenantId"
+  _saveaccountconf_mutable CONOHA_IdentityServiceApi "$CONOHA_IdentityServiceApi"
+
+  if token="$(_conoha_get_accesstoken "$CONOHA_IdentityServiceApi/tokens" "$CONOHA_Username" "$CONOHA_Password" "$CONOHA_TenantId")"; then
+    accesstoken="$(printf "%s" "$token" | sed -n 1p)"
+    CONOHA_Api="$(printf "%s" "$token" | sed -n 2p)"
+  else
+    return 1
+  fi
+
+  _debug "First detect the root zone"
+  if ! _get_root "$fulldomain" "$CONOHA_Api" "$accesstoken"; then
+    _err "invalid domain"
+    return 1
+  fi
+  _debug _domain_id "$_domain_id"
+  _debug _sub_domain "$_sub_domain"
+  _debug _domain "$_domain"
+
+  _info "Adding record"
+  body="{\"type\":\"TXT\",\"name\":\"$fulldomain.\",\"data\":\"$txtvalue\",\"ttl\":60}"
+  if _conoha_rest POST "$CONOHA_Api/v1/domains/$_domain_id/records" "$body" "$accesstoken"; then
+    if _contains "$response" '"data":"'"$txtvalue"'"'; then
+      _info "Added, OK"
+      return 0
+    else
+      _err "Add txt record error."
+      return 1
+    fi
+  fi
+
+  _err "Add txt record error."
+  return 1
+}
+
+#Usage: fulldomain txtvalue
+#Remove the txt record after validation.
+dns_conoha_rm() {
+  fulldomain=$1
+  txtvalue=$2
+  _info "Using conoha"
+  _debug fulldomain "$fulldomain"
+  _debug txtvalue "$txtvalue"
+
+  _debug "Check uesrname and password"
+  CONOHA_Username="${CONOHA_Username:-$(_readaccountconf_mutable CONOHA_Username)}"
+  CONOHA_Password="${CONOHA_Password:-$(_readaccountconf_mutable CONOHA_Password)}"
+  CONOHA_TenantId="${CONOHA_TenantId:-$(_readaccountconf_mutable CONOHA_TenantId)}"
+  CONOHA_IdentityServiceApi="${CONOHA_IdentityServiceApi:-$(_readaccountconf_mutable CONOHA_IdentityServiceApi)}"
+  if [ -z "$CONOHA_Username" ] || [ -z "$CONOHA_Password" ] || [ -z "$CONOHA_TenantId" ] || [ -z "$CONOHA_IdentityServiceApi" ]; then
+    CONOHA_Username=""
+    CONOHA_Password=""
+    CONOHA_TenantId=""
+    CONOHA_IdentityServiceApi=""
+    _err "You didn't specify a conoha api username and password yet."
+    _err "Please create the user and try again."
+    return 1
+  fi
+
+  _saveaccountconf_mutable CONOHA_Username "$CONOHA_Username"
+  _saveaccountconf_mutable CONOHA_Password "$CONOHA_Password"
+  _saveaccountconf_mutable CONOHA_TenantId "$CONOHA_TenantId"
+  _saveaccountconf_mutable CONOHA_IdentityServiceApi "$CONOHA_IdentityServiceApi"
+
+  if token="$(_conoha_get_accesstoken "$CONOHA_IdentityServiceApi/tokens" "$CONOHA_Username" "$CONOHA_Password" "$CONOHA_TenantId")"; then
+    accesstoken="$(printf "%s" "$token" | sed -n 1p)"
+    CONOHA_Api="$(printf "%s" "$token" | sed -n 2p)"
+  else
+    return 1
+  fi
+
+  _debug "First detect the root zone"
+  if ! _get_root "$fulldomain" "$CONOHA_Api" "$accesstoken"; then
+    _err "invalid domain"
+    return 1
+  fi
+  _debug _domain_id "$_domain_id"
+  _debug _sub_domain "$_sub_domain"
+  _debug _domain "$_domain"
+
+  _debug "Getting txt records"
+  if ! _conoha_rest GET "$CONOHA_Api/v1/domains/$_domain_id/records" "" "$accesstoken"; then
+    _err "Error"
+    return 1
+  fi
+
+  record_id=$(printf "%s" "$response" | _egrep_o '{[^}]*}' \
+    | grep '"type":"TXT"' | grep "\"data\":\"$txtvalue\"" | _egrep_o "\"id\":\"[^\"]*\"" \
+    | _head_n 1 | cut -d : -f 2 | tr -d \")
+  if [ -z "$record_id" ]; then
+    _err "Can not get record id to remove."
+    return 1
+  fi
+  _debug record_id "$record_id"
+
+  _info "Removing the txt record"
+  if ! _conoha_rest DELETE "$CONOHA_Api/v1/domains/$_domain_id/records/$record_id" "" "$accesstoken"; then
+    _err "Delete record error."
+    return 1
+  fi
+
+  return 0
+}
+
+####################  Private functions below ##################################
+
+_conoha_rest() {
+  m="$1"
+  ep="$2"
+  data="$3"
+  accesstoken="$4"
+
+  export _H1="Accept: application/json"
+  export _H2="Content-Type: application/json"
+  if [ -n "$accesstoken" ]; then
+    export _H3="X-Auth-Token: $accesstoken"
+  fi
+
+  _debug "$ep"
+  if [ "$m" != "GET" ]; then
+    _secure_debug2 data "$data"
+    response="$(_post "$data" "$ep" "" "$m")"
+  else
+    response="$(_get "$ep")"
+  fi
+  _ret="$?"
+  _secure_debug2 response "$response"
+  if [ "$_ret" != "0" ]; then
+    _err "error $ep"
+    return 1
+  fi
+
+  response="$(printf "%s" "$response" | _normalizeJson)"
+  return 0
+}
+
+_conoha_get_accesstoken() {
+  ep="$1"
+  username="$2"
+  password="$3"
+  tenantId="$4"
+
+  accesstoken="$(_readaccountconf_mutable conoha_accesstoken)"
+  expires="$(_readaccountconf_mutable conoha_tokenvalidto)"
+  CONOHA_Api="$(_readaccountconf_mutable conoha_dns_ep)"
+
+  # can we reuse the access token?
+  if [ -n "$accesstoken" ] && [ -n "$expires" ] && [ -n "$CONOHA_Api" ]; then
+    utc_date="$(_utc_date | sed "s/ /T/")"
+    if expr "$utc_date" "<" "$expires" >/dev/null; then
+      # access token is still valid - reuse it
+      _debug "reusing access token"
+      printf "%s\n%s\n" "$accesstoken" "$CONOHA_Api"
+      return 0
+    else
+      _debug "access token expired"
+    fi
+  fi
+  _debug "getting new access token"
+
+  body="$(printf '{"auth":{"passwordCredentials":{"username":"%s","password":"%s"},"tenantId":"%s"}}' "$username" "$password" "$tenantId")"
+  if ! _conoha_rest POST "$ep" "$body" ""; then
+    _err error "$response"
+    return 1
+  fi
+  accesstoken=$(printf "%s" "$response" | _egrep_o "\"id\":\"[^\"]*\"" | _head_n 1 | cut -d : -f 2 | tr -d \")
+  expires=$(printf "%s" "$response" | _egrep_o "\"expires\":\"[^\"]*\"" | _head_n 1 | cut -d : -f 2-4 | tr -d \" | tr -d Z) #expect UTC
+  if [ -z "$accesstoken" ] || [ -z "$expires" ]; then
+    _err "no acccess token received. Check your Conoha settings see $WIKI"
+    return 1
+  fi
+  _saveaccountconf_mutable conoha_accesstoken "$accesstoken"
+  _saveaccountconf_mutable conoha_tokenvalidto "$expires"
+
+  CONOHA_Api=$(printf "%s" "$response" | _egrep_o 'publicURL":"'"$CONOHA_DNS_EP_PREFIX_REGEXP"'[^"]*"' | _head_n 1 | cut -d : -f 2-3 | tr -d \")
+  if [ -z "$CONOHA_Api" ]; then
+    _err "failed to get conoha dns endpoint url"
+    return 1
+  fi
+  _saveaccountconf_mutable conoha_dns_ep "$CONOHA_Api"
+
+  printf "%s\n%s\n" "$accesstoken" "$CONOHA_Api"
+  return 0
+}
+
+#_acme-challenge.www.domain.com
+#returns
+# _sub_domain=_acme-challenge.www
+# _domain=domain.com
+# _domain_id=sdjkglgdfewsdfg
+_get_root() {
+  domain="$1"
+  ep="$2"
+  accesstoken="$3"
+  i=2
+  p=1
+  while true; do
+    h=$(printf "%s" "$domain" | cut -d . -f $i-100).
+    _debug h "$h"
+    if [ -z "$h" ]; then
+      #not valid
+      return 1
+    fi
+
+    if ! _conoha_rest GET "$ep/v1/domains?name=$h" "" "$accesstoken"; then
+      return 1
+    fi
+
+    if _contains "$response" "\"name\":\"$h\"" >/dev/null; then
+      _domain_id=$(printf "%s\n" "$response" | _egrep_o "\"id\":\"[^\"]*\"" | head -n 1 | cut -d : -f 2 | tr -d \")
+      if [ "$_domain_id" ]; then
+        _sub_domain=$(printf "%s" "$domain" | cut -d . -f 1-$p)
+        _domain=$h
+        return 0
+      fi
+      return 1
+    fi
+    p=$i
+    i=$(_math "$i" + 1)
+  done
+  return 1
+}