diff --git a/nx/include/switch.h b/nx/include/switch.h
index 6ba918e697..127993db83 100644
--- a/nx/include/switch.h
+++ b/nx/include/switch.h
@@ -132,6 +132,7 @@ extern "C" {
 #include "switch/services/ectx.h"
 #include "switch/services/avm.h"
 #include "switch/services/mm.h"
+#include "switch/services/omm.h"
 
 #include "switch/display/binder.h"
 #include "switch/display/parcel.h"
diff --git a/nx/include/switch/services/omm.h b/nx/include/switch/services/omm.h
new file mode 100644
index 0000000000..083828f427
--- /dev/null
+++ b/nx/include/switch/services/omm.h
@@ -0,0 +1,41 @@
+/**
+ * @file omm.h
+ * @author MasaGratoR
+ * @copyright libnx Authors
+ */
+
+#pragma once
+
+#include "../types.h"
+#include "../sf/service.h"
+
+///OperationMode
+typedef enum {
+    OmmOperationMode_Handheld   = 0,
+    OmmOperationMode_Console    = 1
+} OmmOperationMode;
+
+///OperationModePolicy
+typedef enum {
+    OmmOperationModePolicy_Auto       = 0,
+    OmmOperationModePolicy_Handheld   = 1,
+    OmmOperationModePolicy_Console    = 2
+} OmmOperationModePolicy;
+
+/// Initialize omm.
+Result ommInitialize(void);
+
+/// Exit omm.
+void ommExit(void);
+
+/// Gets the Service for omm.
+Service* ommGetServiceSession(void);
+
+/// Returns a DefaultDisplayResolution. Only available on [3.0.0+].
+Result ommGetDefaultDisplayResolution(s32* width, s32* height);
+
+/// Returns an OmmOperationMode.
+Result ommGetOperationMode(OmmOperationMode* s);
+
+/// Takes an OmmOperationModePolicy. Only available on [3.0.0+].
+Result ommSetOperationModePolicy(OmmOperationModePolicy value);
diff --git a/nx/source/services/omm.c b/nx/source/services/omm.c
new file mode 100644
index 0000000000..6da7c7024d
--- /dev/null
+++ b/nx/source/services/omm.c
@@ -0,0 +1,58 @@
+#define NX_SERVICE_ASSUME_NON_DOMAIN
+#include "service_guard.h"
+#include "services/omm.h"
+#include "runtime/hosversion.h"
+
+static Service g_ommSrv;
+
+NX_GENERATE_SERVICE_GUARD(omm);
+
+Result _ommInitialize(void) {
+    return smGetService(&g_ommSrv, "omm");
+}
+
+void _ommCleanup(void) {
+    serviceClose(&g_ommSrv);
+}
+
+Service* ommGetServiceSession(void) {
+    return &g_ommSrv;
+}
+
+Result ommGetDefaultDisplayResolution(s32* width, s32* height) {
+    if (hosversionBefore(3,0,0))
+        return MAKERESULT(Module_Libnx, LibnxError_IncompatSysVer);
+
+    struct {
+        s32 width;
+        s32 height;
+    } out;
+
+    Result rc = serviceDispatchOut(&g_ommSrv, 11, out);
+
+    if (R_SUCCEEDED(rc)) {
+        *width = out.width;
+        *height = out.height;
+    }
+
+    return rc;
+}
+
+Result ommGetOperationMode(OmmOperationMode* s) {
+    u8 out;
+    Result rc = serviceDispatchOut(&g_ommSrv, 0, out);
+
+    if (R_SUCCEEDED(rc)) {
+        *s = out;
+    }
+
+    return rc;
+}
+
+Result ommSetOperationModePolicy(OmmOperationModePolicy value) {
+    if (hosversionBefore(3,0,0))
+        return MAKERESULT(Module_Libnx, LibnxError_IncompatSysVer);
+
+    u8 tmp = value;
+    return serviceDispatchIn(&g_ommSrv, 10, tmp);
+}