diff --git a/lang/boolean.c b/lang/boolean.c
new file mode 100644
index 0000000..c2fe8d6
--- /dev/null
+++ b/lang/boolean.c
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2023 John Watts and the LuminaSensum contributors
+
+#include "boolean.h"
+#include "error.h"
+#include "object.h"
+#include "vm.h"
+#include <stddef.h>
+
+static struct object_class boolean_class;
+
+struct boolean {
+	bool value;
+};
+
+Object boolean_create(bool value) {
+	Object obj = object_create(&boolean_class, sizeof(struct boolean));
+	abort_if(!obj, "unable to allocate boolean");
+	struct boolean *boolean =
+		(struct boolean *)object_priv(obj, &boolean_class);
+	boolean->value = value;
+	return obj;
+}
+
+static void boolean_cleanup(Object obj) { (void)obj; }
+
+bool boolean_value(Object obj) {
+	struct boolean *boolean =
+		(struct boolean *)object_priv(obj, &boolean_class);
+	return boolean->value;
+}
+
+static void boolean_not(VmState state, Object obj, void *priv) {
+	(void)priv;
+	int arg_count = vm_stack_depth(state);
+	abort_if(arg_count != 1, "boolean_not called with extra arguments");
+	bool value = boolean_value(obj);
+	bool not = !value;
+	vm_stack_set(state, 0, boolean_create(not ));
+}
+
+static struct object_call calls[] = {
+	{.name = "Not", .handler = boolean_not, .priv = NULL},
+	{.name = NULL, /* end */}};
+
+static struct object_class boolean_class = {
+	.cleanup = boolean_cleanup,
+	.calls = &calls[0],
+};
diff --git a/lang/boolean.h b/lang/boolean.h
new file mode 100644
index 0000000..b4b053f
--- /dev/null
+++ b/lang/boolean.h
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2023 John Watts and the LuminaSensum contributors
+
+#ifndef BOOLEAN_H
+#define BOOLEAN_H
+
+#include "types.h"
+#include <stdbool.h>
+
+// Creates a boolean
+Object boolean_create(bool value);
+
+// Gets a boolean's value
+bool boolean_value(Object obj);
+
+#endif