diff --git a/src/main/antlr4/de/hsrm/compiler/Klang/Klang.g4 b/src/main/antlr4/de/hsrm/compiler/Klang/Klang.g4
index c88746e..136d971 100644
--- a/src/main/antlr4/de/hsrm/compiler/Klang/Klang.g4
+++ b/src/main/antlr4/de/hsrm/compiler/Klang/Klang.g4
@@ -72,7 +72,10 @@ expression
   | OPAR lhs=expression GT rhs=expression CPAR #greaterThanExpression
   | OPAR lhs=expression LTE rhs=expression CPAR #lessThanOrEqualToExpression
   | OPAR lhs=expression GTE rhs=expression CPAR #GreaterThanOrEqualToExpression
+  | OPAR lhs=expression OR rhs=expression CPAR #OrExpression
+  | OPAR lhs=expression AND rhs=expression CPAR #AndExpression
   | SUB expression #negateExpression
+  | NOT expression #NotExpression
   | functionCall #functionCallExpression
   ;
 
@@ -127,6 +130,9 @@ LT: '<';
 GT: '>';
 LTE: '<=';
 GTE: '>=';
+OR: '||';
+AND: '&&';
+NOT: '!';
 
 MUL: '*';
 ADD: '+';
diff --git a/src/main/java/de/hsrm/compiler/Klang/ContextAnalysis.java b/src/main/java/de/hsrm/compiler/Klang/ContextAnalysis.java
index bfb3905..da7cfa0 100644
--- a/src/main/java/de/hsrm/compiler/Klang/ContextAnalysis.java
+++ b/src/main/java/de/hsrm/compiler/Klang/ContextAnalysis.java
@@ -10,6 +10,7 @@ import de.hsrm.compiler.Klang.nodes.loops.ForLoop;
 import de.hsrm.compiler.Klang.nodes.loops.WhileLoop;
 import de.hsrm.compiler.Klang.nodes.statements.*;
 import de.hsrm.compiler.Klang.types.Type;
+import sun.tools.tree.OrExpression;
 
 public class ContextAnalysis extends KlangBaseVisitor<Node> {
   Set<String> vars = new HashSet<>();
@@ -126,6 +127,16 @@ public class ContextAnalysis extends KlangBaseVisitor<Node> {
     return new ReturnStatement(expression);
   }
 
+  @Override
+  public Node visitOrExpression(KlangParser.OrExpressionContext ctx) {
+    return new OrExpression((Expression) this.visit(ctx.lhs), (Expression) this.visit(ctx.rhs));
+  }
+
+  @Override
+  public Node visitAndExpression(KlangParser.AndExpressionContext ctx) {
+    return new AndExpression((Expression) this.visit(ctx.lhs), (Expression) this.visit(ctx.rhs));
+  }
+
   @Override
   public Node visitAdditionExpression(KlangParser.AdditionExpressionContext ctx) {
     return new AdditionExpression((Expression) this.visit(ctx.lhs), (Expression) this.visit(ctx.rhs));
@@ -186,6 +197,11 @@ public class ContextAnalysis extends KlangBaseVisitor<Node> {
     return new NegateExpression((Expression) this.visit(ctx.expression()));
   }
 
+  @Override
+  public Node visitNotExpression(KlangParser.NotExpressionContext ctx) {
+    return new NotExpression((Expression) this.visit(ctx.expression()));
+  }
+
   @Override
   public Node visitVariable(KlangParser.VariableContext ctx) {
     String name = ctx.IDENT().getText();
diff --git a/src/main/java/de/hsrm/compiler/Klang/nodes/expressions/AndExpression.java b/src/main/java/de/hsrm/compiler/Klang/nodes/expressions/AndExpression.java
new file mode 100644
index 0000000..523a8fe
--- /dev/null
+++ b/src/main/java/de/hsrm/compiler/Klang/nodes/expressions/AndExpression.java
@@ -0,0 +1,14 @@
+package de.hsrm.compiler.Klang.nodes.expressions;
+
+import de.hsrm.compiler.Klang.visitors.Visitor;
+
+public class AndExpression extends BinaryExpression {
+    public AndExpression(Expression lhs, Expression rhs) {
+        super(lhs, rhs);
+    }
+
+    @Override
+    public <R> R welcome(Visitor<R> v) {
+        return v.visit(this);
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/de/hsrm/compiler/Klang/nodes/expressions/NotExpression.java b/src/main/java/de/hsrm/compiler/Klang/nodes/expressions/NotExpression.java
new file mode 100644
index 0000000..f35dd29
--- /dev/null
+++ b/src/main/java/de/hsrm/compiler/Klang/nodes/expressions/NotExpression.java
@@ -0,0 +1,16 @@
+package de.hsrm.compiler.Klang.nodes.expressions;
+
+import de.hsrm.compiler.Klang.visitors.Visitor;
+
+public class NotExpression extends UnaryExpression {
+
+    public NotExpression(Expression lhs) {
+        super(lhs);
+    }
+
+    @Override
+    public <R> R welcome(Visitor<R> v) {
+        return v.visit(this);
+    }
+
+}
\ No newline at end of file
diff --git a/src/main/java/de/hsrm/compiler/Klang/nodes/expressions/OrExpression.java b/src/main/java/de/hsrm/compiler/Klang/nodes/expressions/OrExpression.java
new file mode 100644
index 0000000..6514275
--- /dev/null
+++ b/src/main/java/de/hsrm/compiler/Klang/nodes/expressions/OrExpression.java
@@ -0,0 +1,14 @@
+package de.hsrm.compiler.Klang.nodes.expressions;
+
+import de.hsrm.compiler.Klang.visitors.Visitor;
+
+public class OrExpression extends BinaryExpression {
+    public OrExpression(Expression lhs, Expression rhs) {
+        super(lhs, rhs);
+    }
+
+    @Override
+    public <R> R welcome(Visitor<R> v) {
+        return v.visit(this);
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/de/hsrm/compiler/Klang/visitors/Visitor.java b/src/main/java/de/hsrm/compiler/Klang/visitors/Visitor.java
index eb7121e..b0abb24 100644
--- a/src/main/java/de/hsrm/compiler/Klang/visitors/Visitor.java
+++ b/src/main/java/de/hsrm/compiler/Klang/visitors/Visitor.java
@@ -8,6 +8,9 @@ import de.hsrm.compiler.Klang.nodes.loops.*;
 import de.hsrm.compiler.Klang.nodes.statements.*;
 
 public interface Visitor<R> {
+    R visit(OrExpression e);
+    R visit(AndExpression e);
+    R visit (NotExpression e);
     R visit(IntegerExpression e);
     R visit(BooleanExpression e);
     R visit(Variable e);
diff --git a/src/test/comparison/comparison.c b/src/test/comparison/comparison.c
index c6d12d4..e8f876f 100644
--- a/src/test/comparison/comparison.c
+++ b/src/test/comparison/comparison.c
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <stdbool.h>
 #include "comparison.h"
 #include "../print/print.h"
 
@@ -12,6 +13,16 @@ int comparisonTest(char* name, int x, int y, int expected, int result) {
   }
 }
 
+int boolTest(char* name, bool a, bool b, bool expected, bool result) {
+  if (expected == result) {
+    bool_succInfixTwo(name, a, b, expected, result);
+    return 0;
+  } else {
+    bool_errInfixTwo(name, a, b, expected, result);
+    return 1;
+  }
+}
+
 void runComparisonTests() {
   printf("\nComparison Tests \n");
   comparisonTest("==", 1, 1, 1, eq(1, 1));
@@ -43,4 +54,9 @@ void runComparisonTests() {
   comparisonTest(">=", 1, 0, 1, gte(1, 0));
   comparisonTest(">=", 0, 1, 0, gte(0, 1));
   comparisonTest(">=", 0, 0, 1, gte(0, 0));
+
+  boolTest("&&", true, true, true, and(true, true));
+  boolTest("&&", true, false, false, and(true, false));
+  boolTest("&&", false, true, false, and(false, true));
+  boolTest("&&", false, false, false, and(false, false));
 }
\ No newline at end of file
diff --git a/src/test/comparison/comparison.h b/src/test/comparison/comparison.h
index 9d4b35a..f5a9566 100644
--- a/src/test/comparison/comparison.h
+++ b/src/test/comparison/comparison.h
@@ -1,6 +1,12 @@
+#include <stdbool.h>
+
 int eq(int x, int y);
 int neq(int x, int y);
 int lt(int x, int y);
 int lte(int x, int y);
 int gt(int x, int y);
 int gte(int x, int y);
+
+bool and(bool a, bool b);
+bool or(bool a, bool b);
+bool not(bool a);
\ No newline at end of file
diff --git a/src/test/print/print.c b/src/test/print/print.c
index 511a67e..ae46b7f 100644
--- a/src/test/print/print.c
+++ b/src/test/print/print.c
@@ -1,3 +1,4 @@
+#include <stdbool.h>
 #include <stdio.h>
 #include "print.h"
 
@@ -39,4 +40,22 @@ void succPrefixTwo(char* name, int x, int y, int expected, int result) {
 void errPrefixTwo(char* name, int x, int y,  int expected, int result) {
   incFailure();
   printf("\033[0;31mERROR:\t\t%s(%d, %d)\tGOT: %d\tExpected: %d\033[0;0m\n", name, x, y, result, expected);
+}
+
+void bool_succPrefixTwo(char* name, bool a, bool b, bool expected, bool result) {
+  incSuccess();
+  printf("\033[0;32mSUCCESS:\t%s(%s, %s)\tGOT: %s\tExpected: %s\033[0;0m\n", name, printBool(a), printBool(b), printBool(result), printBool(expected));
+}
+
+void bool_errPrefixTwo(char* name, bool a, bool b,  bool expected, bool result) {
+  incFailure();
+  printf("\033[0;32mSUCCESS:\t%s(%s, %s)\tGOT: %s\tExpected: %s\033[0;0m\n", name, printBool(a), printBool(b), printBool(result), printBool(expected));
+
+}
+
+char* printBool(bool a) {
+  if (a == true) {
+    return "true";
+  }
+  return "false";
 }
\ No newline at end of file
diff --git a/src/test/print/print.h b/src/test/print/print.h
index d274b51..5673d5c 100644
--- a/src/test/print/print.h
+++ b/src/test/print/print.h
@@ -10,4 +10,7 @@ void succPrefixTwo(char* name, int x,  int y, int expected, int result);
 void errPrefixTwo(char* name, int x,  int y, int expected, int result);
 
 void succInfixTwo(char* name, int x, int y, int expected, int result);
-void errInfixTwo(char* name, int x, int y, int expected, int result);
\ No newline at end of file
+void errInfixTwo(char* name, int x, int y, int expected, int result);
+
+void bool_succInfixTwo(char* name, bool x, bool y, bool expected, bool result);
+void bool_errInfixTwo(char* name, bool x, bool y, bool expected, bool result);
diff --git a/src/test/test.k b/src/test/test.k
index 6a6abbf..b6066a8 100644
--- a/src/test/test.k
+++ b/src/test/test.k
@@ -162,4 +162,16 @@ function myFor(end) {
   return x;
 }
 
+function and(a, b) {
+  return (a && b);
+}
+
+function or(a, b) {
+  return (a || b);
+}
+
+function not(a) {
+  return (!a);
+}
+
 add(1, 1);