diff --git a/esphome/components/ethernet/ethernet_component_rp2040.cpp b/esphome/components/ethernet/ethernet_component_rp2040.cpp
index c4f7aceac8e..f47f57cb326 100644
--- a/esphome/components/ethernet/ethernet_component_rp2040.cpp
+++ b/esphome/components/ethernet/ethernet_component_rp2040.cpp
@@ -180,6 +180,7 @@ void EthernetComponent::dump_config() {
 network::IPAddresses EthernetComponent::get_ip_addresses() {
   network::IPAddresses addresses;
   if (this->eth_ != nullptr) {
+    LwIPLock lock;
     addresses[0] = network::IPAddress(this->eth_->localIP());
   }
   return addresses;