diff --git a/public/language/en_GB/search.json b/public/language/en_GB/search.json
index 945e58c852..23519b038b 100644
--- a/public/language/en_GB/search.json
+++ b/public/language/en_GB/search.json
@@ -1,5 +1,7 @@
 {
 	"results_matching": "%1 result(s) matching \"%2\", (%3 seconds)",
 	"no-matches": "No matches found",
-	"in": "In"
+	"in": "In",
+	"by": "By",
+	"posted-by": "Posted by"
 }
diff --git a/public/src/app.js b/public/src/app.js
index d894551064..a77200fdd9 100644
--- a/public/src/app.js
+++ b/public/src/app.js
@@ -437,7 +437,7 @@ app.uid = null;
 				e.preventDefault();
 				var input = $(this).find('input');
 
-				search.query(input.val(), 'posts', function() {
+				search.query({term: input.val(), in: 'posts'}, function() {
 					input.val('');
 				});
 			});
diff --git a/public/src/client/search.js b/public/src/client/search.js
index e08a5dc410..e536aaa160 100644
--- a/public/src/client/search.js
+++ b/public/src/client/search.js
@@ -1,18 +1,51 @@
+'use strict';
+
+/* globals app, define, utils, socket*/
+
 define('forum/search', ['search'], function(searchModule) {
 	var	Search = {};
 
 	Search.init = function() {
 		var searchQuery = $('#results').attr('data-search-query');
-		var regexes = [];
-		var searchTerms = searchQuery.split(' ');
 
-		$('#advanced-search input').val(searchQuery);
+		$('#advanced-search #search-input').val(searchQuery);
 		var params = utils.params();
+		var select = $('#advanced-search select');
 		if (params && params.in) {
-			$('#advanced-search select').val(params.in);
+			select.val(params.in);
 		}
 
+		if (params && params.by) {
+			$('.by-container #posted-by-input').val(params.by);
+		}
+
+		select.on('change', function() {
+			$('.by-container').toggleClass('hide', select.val() !== 'posts');
+		});
+
+		highlightMatches(searchQuery);
 
+		$('#advanced-search').off('submit').on('submit', function(e) {
+			e.preventDefault();
+			var input = $(this).find('#search-input');
+			var searchIn = $(this).find('select');
+			var postedBy = $(this).find('#posted-by-input');
+
+			searchModule.query({
+				term: input.val(),
+				in: searchIn.val(),
+				by: postedBy.val()
+			}, function() {
+				input.val('');
+			});
+		});
+
+		enableAutoComplete();
+	};
+
+	function highlightMatches(searchQuery) {
+		var searchTerms = searchQuery.split(' ');
+		var regexes = [];
 		for (var i=0; i<searchTerms.length; ++i) {
 			var regex = new RegExp(searchTerms[i], 'gi');
 			regexes.push({regex: regex, term: searchTerms[i]});
@@ -26,18 +59,30 @@ define('forum/search', ['search'], function(searchModule) {
 			}
 			result.html(text).find('img').addClass('img-responsive');
 		});
+	}
 
 
-		$('#advanced-search').off('submit').on('submit', function(e) {
-			e.preventDefault();
-			var input = $(this).find('input');
-			var searchIn = $(this).find('select');
+	function enableAutoComplete() {
+		var input = $('.by-container #posted-by-input');
+		input.autocomplete({
+			delay: 100,
+			source: function(request, response) {
+				socket.emit('user.search', {query: request.term}, function(err, result) {
+					if (err) {
+						return app.alertError(err.message);
+					}
 
-			searchModule.query(input.val(), searchIn.val(), function() {
-				input.val('');
-			});
+					if (result && result.users) {
+						var names = result.users.map(function(user) {
+							return user && user.username;
+						});
+						response(names);
+					}
+					$('.ui-autocomplete a').attr('data-ajaxify', 'false');
+				});
+			}
 		});
-	};
+	}
 
 	return Search;
 });
diff --git a/public/src/client/users.js b/public/src/client/users.js
index a1e852bb9f..60f9d6abb1 100644
--- a/public/src/client/users.js
+++ b/public/src/client/users.js
@@ -115,21 +115,20 @@ define('forum/users', function() {
 
 				notify.html('<i class="fa fa-spinner fa-spin"></i>');
 
-				socket.emit('user.search', username, function(err, data) {
+				socket.emit('user.search', {query: username}, function(err, data) {
 					if (err) {
 						reset();
 						return app.alertError(err.message);
 					}
 
 					if (!data) {
-						reset();
-						return;
+						return reset();
 					}
 
 					templates.parse('users', 'users', data, function(html) {
 						translator.translate(html, function(translated) {
 							$('#users-container').html(translated);
-							
+
 							if (!data.users.length) {
 								translator.translate('[[error:no-user]]', function(translated) {
 									notify.html(translated);
diff --git a/public/src/modules/search.js b/public/src/modules/search.js
index 7dd7abddff..73ff828673 100644
--- a/public/src/modules/search.js
+++ b/public/src/modules/search.js
@@ -7,7 +7,11 @@ define('search', ['navigator'], function(nav) {
 			current: {}
 		};
 
-	Search.query = function(term, searchIn, callback) {
+	Search.query = function(data, callback) {
+		var term = data.term;
+		var searchIn = data.in || 'posts';
+		var postedBy = data.by || '';
+
 		// Detect if a tid was specified
 		var topicSearch = term.match(/in:topic-([\d]+)/);
 
@@ -19,8 +23,11 @@ define('search', ['navigator'], function(nav) {
 			} catch(e) {
 				return app.alertError('[[error:invalid-search-term]]');
 			}
-
-			ajaxify.go('search/' + term + (searchIn ? '?in=' + searchIn : ''));
+			var query = {in: searchIn};
+			if (postedBy && searchIn === 'posts') {
+				query.by = postedBy;
+			}
+			ajaxify.go('search/' + term + '?' + decodeURIComponent($.param(query)));
 			callback();
 		} else {
 			var cleanedTerm = term.replace(topicSearch[0], ''),
diff --git a/src/controllers/search.js b/src/controllers/search.js
index 1d4aff306c..1a5690a6e7 100644
--- a/src/controllers/search.js
+++ b/src/controllers/search.js
@@ -28,7 +28,12 @@ searchController.search = function(req, res, next) {
 
 	req.params.term = validator.escape(req.params.term);
 
-	search.search(req.params.term, req.query.in, uid, function(err, results) {
+	search.search({
+		query: req.params.term,
+		searchIn: req.query.in,
+		postedBy: req.query.by,
+		uid: uid
+	}, function(err, results) {
 		if (err) {
 			return next(err);
 		}
diff --git a/src/search.js b/src/search.js
index 869455b3de..c4a830f41a 100644
--- a/src/search.js
+++ b/src/search.js
@@ -11,7 +11,7 @@ var search = {};
 
 module.exports = search;
 
-search.search = function(query, searchIn, uid, callback) {
+search.search = function(data, callback) {
 	function done(err, data) {
 		if (err) {
 			return callback(err);
@@ -20,12 +20,16 @@ search.search = function(query, searchIn, uid, callback) {
 		result.search_query = query;
 		result[searchIn] = data;
 		result.matchCount = data.length;
+		result.hidePostedBy = searchIn !== 'posts';
 		result.time = (process.elapsedTimeSince(start) / 1000).toFixed(2);
 		callback(null, result);
 	}
 
 	var start = process.hrtime();
-	searchIn = searchIn || 'posts';
+
+	var query = data.query;
+	var searchIn = data.searchIn || 'posts';
+	var uid = data.uid || 0;
 
 	var result = {
 		posts: [],
@@ -34,7 +38,7 @@ search.search = function(query, searchIn, uid, callback) {
 	};
 
 	if (searchIn === 'posts') {
-		searchInPosts(query, uid, done);
+		searchInPosts(query, data.postedBy, uid, done);
 	} else if (searchIn === 'users') {
 		searchInUsers(query, done);
 	} else if (searchIn === 'tags') {
@@ -44,13 +48,20 @@ search.search = function(query, searchIn, uid, callback) {
 	}
 };
 
-function searchInPosts(query, uid, callback) {
+function searchInPosts(query, postedBy, uid, callback) {
 	async.parallel({
 		pids: function(next) {
 			searchQuery('post', query, next);
 		},
 		tids: function(next) {
 			searchQuery('topic', query, next);
+		},
+		postedByUid: function(next) {
+			if (postedBy) {
+				user.getUidByUsername(postedBy, next);
+			} else {
+				next(null, 0);
+			}
 		}
 	}, function (err, results) {
 		if (err) {
@@ -75,6 +86,14 @@ function searchInPosts(query, uid, callback) {
 			},
 			function(pids, next) {
 				posts.getPostSummaryByPids(pids, uid, {stripTags: true, parse: false}, next);
+			},
+			function(posts, next) {
+				if (postedBy) {
+					posts = posts.filter(function(post) {
+						return post && parseInt(post.uid, 10) === parseInt(results.postedByUid, 10);
+					});
+				}
+				next(null, posts);
 			}
 		], callback);
 	});
diff --git a/src/socket.io/user.js b/src/socket.io/user.js
index e20ff65bbb..392327c93f 100644
--- a/src/socket.io/user.js
+++ b/src/socket.io/user.js
@@ -62,11 +62,14 @@ SocketUser.increaseViewCount = function(socket, uid, callback) {
 	}
 };
 
-SocketUser.search = function(socket, username, callback) {
+SocketUser.search = function(socket, data, callback) {
+	if (!data) {
+		return callback(new Error('[[error:invalid-data]]'))
+	}
 	if (!socket.uid) {
 		return callback(new Error('[[error:not-logged-in]]'));
 	}
-	user.search({query: username}, callback);
+	user.search({query: data.query}, callback);
 };
 
 // Password Reset