diff --git a/core/modules/filters/lookup.js b/core/modules/filters/lookup.js
new file mode 100644
index 000000000..3ab7f42e6
--- /dev/null
+++ b/core/modules/filters/lookup.js
@@ -0,0 +1,30 @@
+/*\
+title: $:/core/modules/filters/lookup.js
+type: application/javascript
+module-type: filteroperator
+
+Filter operator that looks up values via a title prefix
+
+[lookup:<field>[<prefix>]]
+
+Prepends the prefix to the selected items and returns the specified field value
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+/*
+Export our filter function
+*/
+exports.lookup = function(source,operator,options) {
+	var results = [];
+	source(function(tiddler,title) {
+		results.push(options.wiki.getTiddlerText(operator.operand + title) || options.wiki.getTiddlerText(operator.operand + operator.suffix));
+	});
+	return results;
+};
+
+})();
diff --git a/editions/test/tiddlers/tests/test-filters.js b/editions/test/tiddlers/tests/test-filters.js
index 1ae98d496..beaee32ea 100644
--- a/editions/test/tiddlers/tests/test-filters.js
+++ b/editions/test/tiddlers/tests/test-filters.js
@@ -82,6 +82,11 @@ describe("Filter tests", function() {
 
 	// Our tests
 
+	it("should handle the lookup operator", function() {
+		expect(wiki.filterTiddlers("Six Seventh 8 +[lookup[Tiddler]]").join(",")).toBe("Missing inaction from TiddlerOne,,Tidd");
+		expect(wiki.filterTiddlers("Six Seventh 8 +[lookup:8[Tiddler]]").join(",")).toBe("Missing inaction from TiddlerOne,Tidd,Tidd");
+	});
+
 	it("should retrieve shadow tiddlers", function() {
 		expect(wiki.getTiddlerText("Tiddler8")).toBe("Tidd");
 	});
diff --git a/editions/tw5.com/tiddlers/lookup Operator (Examples).tid b/editions/tw5.com/tiddlers/lookup Operator (Examples).tid
new file mode 100644
index 000000000..052e1d2bd
--- /dev/null
+++ b/editions/tw5.com/tiddlers/lookup Operator (Examples).tid	
@@ -0,0 +1,7 @@
+created: 20170907144257037
+modified: 20170907144559822
+title: lookup Operator (Examples)
+type: text/vnd.tiddlywiki
+
+<<.operator-example 1 "[all[shadows+tiddlers]tag[$:/tags/PageControls]lookup[$:/config/PageControlButtons/Visibility/]]" "Retrieve the visibility status of each page control button">>
+<<.operator-example 2 "[all[shadows+tiddlers]tag[$:/tags/PageControls]lookup:show[$:/config/PageControlButtons/Visibility/]]" "Retrieve the visibility status of each page control button, this time with a default value">>
diff --git a/editions/tw5.com/tiddlers/lookup Operator.tid b/editions/tw5.com/tiddlers/lookup Operator.tid
new file mode 100644
index 000000000..f0cc8d3d3
--- /dev/null
+++ b/editions/tw5.com/tiddlers/lookup Operator.tid	
@@ -0,0 +1,24 @@
+caption: lookup
+created: 20170907103639431
+modified: 20170907144703051
+op-input: a [[selection of titles|Title Selection]]
+op-output: the lookup values corresponding to each input title
+op-parameter: prefix applied to input titles to yield title of lookup tiddler from which value is retrieved
+op-parameter-name: P
+op-purpose: applies a prefix to each input title to yield the title of a tiddler from which the final value is retrieved
+op-suffix: the default value to be used for missing lookups
+op-suffix-name: D
+tags: [[Filter Operators]]
+title: lookup Operator
+type: text/vnd.tiddlywiki
+
+<<.from-version "5.1.14">>
+
+The action of this operator is as follows:
+
+* Apply the specified prefix to each input tiddler title, yielding a new list of tiddler titles
+* Transclude the value of each of those tiddlers
+** Substitute the default value for missing or empty tiddlers
+* Return the list of values
+
+<<.operator-examples "lookup">>