diff --git a/gravity-forms/gw-conditional-logic-operator-does-not-contain.php b/gravity-forms/gw-conditional-logic-operator-does-not-contain.php
new file mode 100644
index 00000000..f96ddbdc
--- /dev/null
+++ b/gravity-forms/gw-conditional-logic-operator-does-not-contain.php
@@ -0,0 +1,172 @@
+<?php
+/**
+ * Gravity Wiz // Gravity Forms // Conditional Logic Operator: "Does Not Contain"
+ * 
+ * Instruction Video: https://www.loom.com/share/8e1b27ec47b341dbb4f0da2bec6a960b
+ *
+ * Check if a source field value does NOT contain a specific substring using the "does not contain" conditional logic operator.
+ *
+ * Plugin Name:  GF Conditional Logic Operator: "Does Not Contain"
+ * Plugin URI:   https://gravitywiz.com/
+ * Description:  Adds support for the "does not contain" conditional logic operator in Gravity Forms.
+ * Author:       Gravity Wiz
+ * Version:      1.0
+ * Author URI:   https://gravitywiz.com
+ */
+class GF_CLO_Does_Not_Contain {
+
+	public function __construct() {
+		add_action( 'init', array( $this, 'init' ) );
+	}
+
+	public function init() {
+
+		add_filter( 'admin_footer', array( $this, 'output_admin_inline_script' ) );
+		add_filter( 'gform_is_valid_conditional_logic_operator', array( $this, 'whitelist_operator' ), 10, 2 );
+		add_filter( 'gpeu_field_filters_from_conditional_logic', array( $this, 'convert_conditional_logic_to_field_filters' ) );
+
+		add_filter( 'gform_pre_render', array( $this, 'load_form_script' ), 10, 2 );
+		add_filter( 'gform_register_init_scripts', array( $this, 'add_init_script' ), 10, 2 );
+		add_filter( 'gform_is_value_match', array( $this, 'evaluate_operator' ), 10, 6 );
+
+	}
+
+	public function output_admin_inline_script() {
+		if ( ! GFForms::get_page() && ! is_admin() && ! in_array( rgget( 'page' ), array( 'gp-email-users' ) ) ) {
+			return;
+		}
+		?>
+		<script>
+			if ( window.gf_vars ) {
+				gf_vars['does_not_contain'] = '<?php esc_html_e( 'does not contain' ); ?>';
+			}
+
+			gform.addFilter( 'gform_conditional_logic_operators', function( operators ) {
+				operators.does_not_contain = 'does not contain';
+				return operators;
+			} );
+		</script>
+		<?php
+	}
+
+	public function load_form_script( $form, $is_ajax_enabled ) {
+
+		if ( $this->is_applicable_form( $form ) && ! has_action( 'wp_footer', array( $this, 'output_script' ) ) ) {
+			add_action( 'wp_footer', array( $this, 'output_script' ) );
+			add_action( 'gform_preview_footer', array( $this, 'output_script' ) );
+		}
+
+		return $form;
+	}
+
+	public function output_script() {
+		?>
+		<script type="text/javascript">
+			( function( $ ) {
+
+				window.GWCLODoesNotContain = function( args ) {
+
+					var self = this;
+
+					for ( var prop in args ) {
+						if ( args.hasOwnProperty( prop ) ) {
+							self[ prop ] = args[ prop ];
+						}
+					}
+
+					self.init = function() {
+						gform.addFilter( 'gform_is_value_match', function( isMatch, formId, rule ) {
+
+							if ( rule.operator !== 'does_not_contain' ) {
+								return isMatch;
+							}
+
+							var fieldValue = '';
+							var $field = $( '#input_' + formId + '_' + rule.fieldId );
+
+							// Handle different field types
+							if ( $field.is(':checkbox') || $field.is(':radio') ) {
+								fieldValue = $field.filter(':checked').map(function() { 
+									return this.value; 
+								}).get().join(',');
+							} else if ( $field.is('select[multiple]') ) {
+								fieldValue = $field.val() ? $field.val().join(',') : '';
+							} else {
+								fieldValue = $field.val() || '';
+							}
+							isMatch = typeof fieldValue === 'string' && fieldValue.indexOf( rule.value ) === -1;
+
+							return isMatch;
+						} );
+					};
+
+					self.init();
+
+				}
+
+			} )( jQuery );
+		</script>
+		<?php
+	}
+
+	public function add_init_script( $form ) {
+
+		if ( ! $this->is_applicable_form( $form ) ) {
+			return;
+		}
+
+		$script = 'new GWCLODoesNotContain();';
+		$slug   = implode( '_', array( 'gwclo_does_not_contain', $form['id'] ) );
+
+		GFFormDisplay::add_init_script( $form['id'], $slug, GFFormDisplay::ON_PAGE_RENDER, $script );
+	}
+
+	public function whitelist_operator( $is_valid, $operator ) {
+		if ( $operator === 'does_not_contain' ) {
+			$is_valid = true;
+		}
+		return $is_valid;
+	}
+
+	public function evaluate_operator( $is_match, $field_value, $target_value, $operation, $source_field, $rule ) {
+
+		if ( $rule['operator'] !== 'does_not_contain' || rgar( $rule, 'gwclodncEvaluatingOperator' ) ) {
+			return $is_match;
+		}
+
+		$rule['gwclodncEvaluatingOperator'] = true;
+
+		// If the field contains the target value, it's not a match.
+		$is_match = strpos( $field_value, $target_value ) === false;
+
+		$rule['gwclodncEvaluatingOperator'] = false;
+
+		return $is_match;
+	}
+
+	public function convert_conditional_logic_to_field_filters( $field_filters ) {
+
+		foreach ( $field_filters as &$field_filter ) {
+			if ( ! is_array( $field_filter ) ) {
+				continue;
+			}
+
+			switch ( $field_filter['operator'] ) {
+				case 'does_not_contain':
+					$field_filter['operator'] = 'NOT LIKE';
+					$field_filter['value']    = '%' . $field_filter['value'] . '%';
+					break;
+			}
+		}
+
+		return $field_filters;
+	}
+
+	public function is_applicable_form( $form ) {
+		return GFFormDisplay::has_conditional_logic( $form );
+	}
+}
+
+# Configuration
+
+new GF_CLO_Does_Not_Contain();