diff --git a/NEWS b/NEWS
index 637adcff3..0daac951a 100644
--- a/NEWS
+++ b/NEWS
@@ -2,6 +2,8 @@ Post v23.03.0
 -------------
   - Enhance LSP.options:arp_proxy to support IPv6, configurable MAC
     addresses and CIDRs.
+  - Add an option for LBs called "ct_flush_enabled" that allows CMS to specify
+    if ovn-controller should flush related CT entries for removed LB backends.
 
 OVN v23.03.0 - 03 Mar 2023
 --------------------------
diff --git a/controller/ovn-controller.c b/controller/ovn-controller.c
index 7dcbfd252..8b85464c6 100644
--- a/controller/ovn-controller.c
+++ b/controller/ovn-controller.c
@@ -2697,7 +2697,8 @@ static void
 lb_data_removed_five_tuples_add(struct ed_type_lb_data *lb_data,
                                 const struct ovn_controller_lb *lb)
 {
-    if (!ovs_feature_is_supported(OVS_CT_TUPLE_FLUSH_SUPPORT)) {
+    if (!ovs_feature_is_supported(OVS_CT_TUPLE_FLUSH_SUPPORT) ||
+        !smap_get_bool(&lb->slb->options, "ct_flush_enabled", true)) {
         return;
     }
 
@@ -2716,7 +2717,8 @@ static void
 lb_data_removed_five_tuples_remove(struct ed_type_lb_data *lb_data,
                                    const struct ovn_controller_lb *lb)
 {
-    if (!ovs_feature_is_supported(OVS_CT_TUPLE_FLUSH_SUPPORT)) {
+    if (!ovs_feature_is_supported(OVS_CT_TUPLE_FLUSH_SUPPORT) ||
+        !smap_get_bool(&lb->slb->options, "ct_flush_enabled", true)) {
         return;
     }
 
diff --git a/ovn-nb.xml b/ovn-nb.xml
index 73f707aa0..c5dbebd1d 100644
--- a/ovn-nb.xml
+++ b/ovn-nb.xml
@@ -2041,6 +2041,13 @@ or
         the affinity timeslot. Max supported affinity_timeout is 65535
         seconds.
       </column>
+
+      <column name="options" key="ct_flush_enabled"
+              type='{"type": "boolean"}'>
+        The value indicates whether ovn-controller should flush CT entries
+        that are related to this LB when the backends are removed. Being set
+        to <code>true</code> by default.
+      </column>
     </group>
   </table>
 
diff --git a/tests/ovn.at b/tests/ovn.at
index fa786112c..724e8b6e5 100644
--- a/tests/ovn.at
+++ b/tests/ovn.at
@@ -35039,6 +35039,26 @@ AT_CHECK([grep -q "Flushing CT for 5-tuple: vip=192.168.50.10:80, backend=192.16
 
 AT_CHECK([test "$(grep -c "Flushing CT for 5-tuple" hv1/ovn-controller.log)" = "6"], [0])
 
+# Check if disable of the CT flush works
+check ovn-nbctl lb-del lb1
+check ovn-nbctl lb-add lb1 "192.168.70.10:80" "192.168.80.10:8080,192.168.90.10:8080"
+check ovn-nbctl set load_balancer lb1 options:ct_flush_enabled="false"
+check ovn-nbctl ls-lb-add sw lb1
+check ovs-vsctl set interface p1 external_ids:iface-id=lsp1
+check ovn-nbctl --wait=hv sync
+
+#AT_CHECK([test "$(grep -c "Flushing CT for 5-tuple" hv1/ovn-controller.log)" = "6"], [0])
+
+# Remove one backend
+check ovn-nbctl --wait=hv set load_balancer lb1 vips='"192.168.70.10:80"="192.168.80.10:8080"'
+
+#AT_CHECK([grep -q "Flushing CT for 5-tuple: vip=192.168.70.10:80, backend=192.168.90.10:8080, protocol=6" hv1/ovn-controller.log], [1])
+#AT_CHECK([test "$(grep -c "Flushing CT for 5-tuple" hv1/ovn-controller.log)" = "6"], [0])
+
+check ovn-nbctl --wait=hv lb-del lb1
+AT_CHECK([grep -q "Flushing CT for 5-tuple: vip=192.168.70.10:80, backend=192.168.80.10:8080, protocol=6" hv1/ovn-controller.log], [1])
+AT_CHECK([test "$(grep -c "Flushing CT for 5-tuple" hv1/ovn-controller.log)" = "6"], [0])
+
 OVN_CLEANUP([hv1])
 AT_CLEANUP
 ])
diff --git a/tests/system-ovn.at b/tests/system-ovn.at
index ad1188078..afd10c15d 100644
--- a/tests/system-ovn.at
+++ b/tests/system-ovn.at
@@ -10013,16 +10013,18 @@ OVS_START_L7([bar1], [http])
 OVS_START_L7([bar2], [http])
 OVS_START_L7([bar3], [http])
 
-OVS_WAIT_FOR_OUTPUT([
-    for i in `seq 1 20`; do
-        ip netns exec foo1 wget 30.0.0.1 -t 5 -T 1 --retry-connrefused -v -o wget$i.log;
-    done
-    ovs-appctl dpctl/dump-conntrack | FORMAT_CT(30.0.0.1) | sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [dnl
+m4_define([LB1_CT_ENTRIES], [dnl
 tcp,orig=(src=192.168.1.2,dst=30.0.0.1,sport=<cleared>,dport=<cleared>),reply=(src=172.16.1.2,dst=192.168.1.2,sport=<cleared>,dport=<cleared>),zone=<cleared>,mark=2,protoinfo=(state=<cleared>)
 tcp,orig=(src=192.168.1.2,dst=30.0.0.1,sport=<cleared>,dport=<cleared>),reply=(src=172.16.1.3,dst=192.168.1.2,sport=<cleared>,dport=<cleared>),zone=<cleared>,mark=2,protoinfo=(state=<cleared>)
 tcp,orig=(src=192.168.1.2,dst=30.0.0.1,sport=<cleared>,dport=<cleared>),reply=(src=172.16.1.4,dst=192.168.1.2,sport=<cleared>,dport=<cleared>),zone=<cleared>,mark=2,protoinfo=(state=<cleared>)
 ])
 
+OVS_WAIT_FOR_OUTPUT([
+    for i in `seq 1 20`; do
+        ip netns exec foo1 wget 30.0.0.1 -t 5 -T 1 --retry-connrefused -v -o wget$i.log;
+    done
+    ovs-appctl dpctl/dump-conntrack | FORMAT_CT(30.0.0.1) | sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [LB1_CT_ENTRIES])
+
 OVS_WAIT_FOR_OUTPUT([
     for i in `seq 1 20`; do
         ip netns exec foo1 wget 30.0.0.2:8000 -t 5 -T 1 --retry-connrefused -v -o wget$i.log;
@@ -10096,6 +10098,27 @@ check ovn-nbctl lb-del lb2
 
 OVS_WAIT_UNTIL([test "$(ovs-appctl dpctl/dump-conntrack | FORMAT_CT(30.0.0.3) | wc -l)" = "0"])
 
+# Config OVN wih disabled CT flush.
+check ovn-nbctl lb-add lb1 30.0.0.1 "172.16.1.2,172.16.1.3,172.16.1.4" \
+-- set load_balancer lb1 options:ct_flush_enabled="false"
+check ovn-nbctl ls-lb-add foo lb1
+
+OVS_WAIT_FOR_OUTPUT([
+    for i in `seq 1 20`; do
+        ip netns exec foo1 wget 30.0.0.1 -t 5 -T 1 --retry-connrefused -v -o wget$i.log;
+    done
+    ovs-appctl dpctl/dump-conntrack | FORMAT_CT(30.0.0.1) | sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [LB1_CT_ENTRIES])
+
+# Remove one backend
+check ovn-nbctl --wait=hv set load_balancer lb1 vips='"30.0.0.1"="172.16.1.2,172.16.1.3"'
+
+AT_CHECK([ovs-appctl dpctl/dump-conntrack | FORMAT_CT(30.0.0.1) | sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [LB1_CT_ENTRIES])
+
+# Remove whole LB
+check ovn-nbctl --wait=hv lb-del lb1
+
+AT_CHECK([ovs-appctl dpctl/dump-conntrack | FORMAT_CT(30.0.0.1) | sed -e 's/zone=[[0-9]]*/zone=<cleared>/'], [0], [LB1_CT_ENTRIES])
+
 OVS_APP_EXIT_AND_WAIT([ovn-controller])
 
 as ovn-sb
