// First Register the Tab by hooking into the 'woocommerce_product_data_tabs' filter add_filter( 'woocommerce_product_data_tabs', 'add_my_custom_product_data_tab' ); function add_my_custom_product_data_tab( $product_data_tabs ) { $product_data_tabs['my-custom-tab'] = array( 'label' => __( 'My Custom Tab', 'my_text_domain' ), 'target' => 'my_custom_product_data', ); return $product_data_tabs; } // Next provide the corresponding tab content by hooking into the 'woocommerce_product_data_panels' action hook // See https://github.com/woothemes/woocommerce/blob/master/includes/admin/meta-boxes/class-wc-meta-box-product-data.php // for more examples of tab content // See https://github.com/woothemes/woocommerce/blob/master/includes/admin/wc-meta-box-functions.php for other built-in // functions you can call to output text boxes, select boxes, etc. add_action( 'woocommerce_product_data_panels', 'add_my_custom_product_data_fields' ); function add_my_custom_product_data_fields() { global $woocommerce, $post; ?> <!-- id below must match target registered in above add_my_custom_product_data_tab function --> <div id="my_custom_product_data" class="panel woocommerce_options_panel"> <?php woocommerce_wp_checkbox( array( 'id' => '_my_custom_field', 'wrapper_class' => 'show_if_simple', 'label' => __( 'My Custom Field Label', 'my_text_domain' ), 'description' => __( 'My Custom Field Description', 'my_text_domain' ), 'default' => '0', 'desc_tip' => false, ) ); ?> </div> <?php }