diff --git a/CHANGELOG.md b/CHANGELOG.md
index b103e0ae6a..8da750caf6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,11 @@
   [Scott Hoyt](https://github.com/scottrhoyt)  
   [#123](https://github.com/realm/SwiftLint/issues/123)
 
+* Added opt-in `ForceUnwrappingRule` to issue warnings for all forced
+  unwrappings.  
+  [Benjamin Otto](https://github.com/Argent)
+  [#55](https://github.com/realm/SwiftLint/issues/55)
+
 ##### Bug Fixes
 
 * Fix several false positives in `ValidDocsRule`.  
diff --git a/Source/SwiftLintFramework/Models/MasterRuleList.swift b/Source/SwiftLintFramework/Models/MasterRuleList.swift
index 522a90a98c..5c08344150 100644
--- a/Source/SwiftLintFramework/Models/MasterRuleList.swift
+++ b/Source/SwiftLintFramework/Models/MasterRuleList.swift
@@ -30,6 +30,7 @@ public let masterRuleList = RuleList( rules: ClosingBraceRule.self,
                                       FileLengthRule.self,
                                       ForceCastRule.self,
                                       ForceTryRule.self,
+                                      ForceUnwrappingRule.self,
                                       FunctionBodyLengthRule.self,
                                       LeadingWhitespaceRule.self,
                                       LegacyConstantRule.self,
diff --git a/Source/SwiftLintFramework/Rules/ForceUnwrappingRule.swift b/Source/SwiftLintFramework/Rules/ForceUnwrappingRule.swift
new file mode 100644
index 0000000000..9cc754ae8d
--- /dev/null
+++ b/Source/SwiftLintFramework/Rules/ForceUnwrappingRule.swift
@@ -0,0 +1,40 @@
+//
+//  ForceUnwrappingRule.swift
+//  SwiftLint
+//
+//  Created by Benjamin Otto on 14/01/16.
+//  Copyright (c) 2015 Realm. All rights reserved.
+//
+
+import SourceKittenFramework
+
+public struct ForceUnwrappingRule: OptInRule, ConfigProviderRule {
+
+    public var config = SeverityConfig(.Warning)
+
+    public init() {}
+
+    public static let description = RuleDescription(
+        identifier: "force_unwrapping",
+        name: "Force Unwrapping",
+        description: "Force unwrapping should be avoided.",
+        nonTriggeringExamples: [
+            "if let url = NSURL(string: query)",
+            "navigationController?.pushViewController(viewController, animated: true)"
+        ],
+        triggeringExamples: [
+            "let url = NSURL(string: query)↓!",
+            "navigationController↓!.pushViewController(viewController, animated: true)",
+            "let unwrapped = optional↓!",
+            "return cell↓!"
+        ]
+    )
+
+    public func validateFile(file: File) -> [StyleViolation] {
+        return file.matchPattern("[\\w)]+!", withSyntaxKinds: [.Identifier]).map {
+            StyleViolation(ruleDescription: self.dynamicType.description,
+                severity: config.severity,
+                location: Location(file: file, characterOffset: NSMaxRange($0) - 1))
+        }
+    }
+}
diff --git a/Source/SwiftLintFrameworkTests/RulesTests.swift b/Source/SwiftLintFrameworkTests/RulesTests.swift
index cecca17681..140d1cf819 100644
--- a/Source/SwiftLintFrameworkTests/RulesTests.swift
+++ b/Source/SwiftLintFrameworkTests/RulesTests.swift
@@ -50,6 +50,10 @@ class RulesTests: XCTestCase {
         verifyRule(ForceTryRule.description)
     }
 
+    func testForceUnwrapping() {
+        verifyRule(ForceUnwrappingRule.description)
+    }
+
     func testFunctionBodyLength() {
         verifyRule(FunctionBodyLengthRule.description)
     }
diff --git a/SwiftLint.xcodeproj/project.pbxproj b/SwiftLint.xcodeproj/project.pbxproj
index 752659dbab..c352d18598 100644
--- a/SwiftLint.xcodeproj/project.pbxproj
+++ b/SwiftLint.xcodeproj/project.pbxproj
@@ -35,6 +35,7 @@
 		69F88BF71BDA38A6005E7CAE /* OpeningBraceRule.swift in Sources */ = {isa = PBXBuildFile; fileRef = 692B1EB11BD7E00F00EAABFF /* OpeningBraceRule.swift */; };
 		83894F221B0C928A006214E1 /* RulesCommand.swift in Sources */ = {isa = PBXBuildFile; fileRef = 83894F211B0C928A006214E1 /* RulesCommand.swift */; };
 		83D71E281B131ECE000395DE /* RuleDescription.swift in Sources */ = {isa = PBXBuildFile; fileRef = 83D71E261B131EB5000395DE /* RuleDescription.swift */; };
+		B58AEED61C492C7B00E901FD /* ForceUnwrappingRule.swift in Sources */ = {isa = PBXBuildFile; fileRef = B58AEED51C492C7B00E901FD /* ForceUnwrappingRule.swift */; };
 		D0AAAB5019FB0960007B24B3 /* SwiftLintFramework.framework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = D0D1216D19E87B05005E4BAA /* SwiftLintFramework.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
 		D0D1217819E87B05005E4BAA /* SwiftLintFramework.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = D0D1216D19E87B05005E4BAA /* SwiftLintFramework.framework */; };
 		D0E7B65319E9C6AD00EDBA4D /* SwiftLintFramework.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = D0D1216D19E87B05005E4BAA /* SwiftLintFramework.framework */; };
@@ -191,6 +192,7 @@
 		695BE9CE1BDFD92B0071E985 /* CommaRule.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = CommaRule.swift; sourceTree = "<group>"; };
 		83894F211B0C928A006214E1 /* RulesCommand.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = RulesCommand.swift; sourceTree = "<group>"; };
 		83D71E261B131EB5000395DE /* RuleDescription.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = RuleDescription.swift; sourceTree = "<group>"; };
+		B58AEED51C492C7B00E901FD /* ForceUnwrappingRule.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ForceUnwrappingRule.swift; sourceTree = "<group>"; };
 		D0D1211B19E87861005E4BAA /* main.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = main.swift; sourceTree = "<group>"; usesTabs = 0; };
 		D0D1212419E878CC005E4BAA /* Common.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = Common.xcconfig; sourceTree = "<group>"; };
 		D0D1212619E878CC005E4BAA /* Debug.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = Debug.xcconfig; sourceTree = "<group>"; };
@@ -545,6 +547,7 @@
 				E88DEA891B0992B300A66CB0 /* FileLengthRule.swift */,
 				E88DEA7F1B09903300A66CB0 /* ForceCastRule.swift */,
 				E816194D1BFBFEAB00946723 /* ForceTryRule.swift */,
+				B58AEED51C492C7B00E901FD /* ForceUnwrappingRule.swift */,
 				E88DEA8F1B099A3100A66CB0 /* FunctionBodyLengthRule.swift */,
 				E88DEA7D1B098F2A00A66CB0 /* LeadingWhitespaceRule.swift */,
 				006ECFC31C44E99E00EF6364 /* LegacyConstantRule.swift */,
@@ -851,6 +854,7 @@
 				E88198421BEA929F00333A11 /* NestingRule.swift in Sources */,
 				3BB47D851C51D80000AE6A10 /* NSRegularExpression+SwiftLint.swift in Sources */,
 				E881985B1BEA974E00333A11 /* StatementPositionRule.swift in Sources */,
+				B58AEED61C492C7B00E901FD /* ForceUnwrappingRule.swift in Sources */,
 				E88DEA711B09847500A66CB0 /* ViolationSeverity.swift in Sources */,
 				3BD9CD3D1C37175B009A5D25 /* YamlParser.swift in Sources */,
 				E88DEA8C1B0999A000A66CB0 /* ASTRule.swift in Sources */,