diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7340df2..603b18c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -56,6 +56,18 @@ else()
     set(ALSA_LIBRARIES "")
 endif()
 
+find_package(CoreAudio)
+if(COREAUDIO_FOUND)
+    set(STATUS_COREAUDIO "OK")
+    set(SOUNDIO_HAVE_COREAUDIO true)
+    include_directories(${COREAUDIO_INCLUDE_DIR})
+else()
+    set(STATUS_COREAUDIO "not found")
+    set(SOUNDIO_HAVE_COREAUDIO false)
+    set(COREAUDIO_LIBRARY "")
+endif()
+
+
 set(LIBSOUNDIO_SOURCES
     "${CMAKE_SOURCE_DIR}/src/soundio.cpp"
     "${CMAKE_SOURCE_DIR}/src/util.cpp"
@@ -106,6 +118,14 @@ if(SOUNDIO_HAVE_ALSA)
         "${CMAKE_SOURCE_DIR}/src/alsa.cpp"
     )
 endif()
+if(SOUNDIO_HAVE_COREAUDIO)
+    set(LIBSOUNDIO_SOURCES ${LIBSOUNDIO_SOURCES}
+        "${CMAKE_SOURCE_DIR}/src/coreaudio.cpp"
+    )
+    set(TEST_SOURCES ${TEST_SOURCES}
+        "${CMAKE_SOURCE_DIR}/src/coreaudio.cpp"
+    )
+endif()
 
 
 # GTFO, -lstdc++ !!
@@ -153,6 +173,7 @@ target_link_libraries(libsoundio_shared LINK_PUBLIC
     ${JACK_LIBRARY}
     ${PULSEAUDIO_LIBRARY}
     ${ALSA_LIBRARIES}
+    ${COREAUDIO_LIBRARY}
     m
     ${CMAKE_THREAD_LIBS_INIT}
 )
@@ -205,7 +226,7 @@ target_link_libraries(unit_tests LINK_PUBLIC
     ${CMAKE_THREAD_LIBS_INIT}
     ${JACK_LIBRARY}
     ${PULSEAUDIO_LIBRARY}
-    ${ALSA_LIBRARIES}
+    ${COREAUDIO_LIBRARY}
     m
 )
 set_target_properties(unit_tests PROPERTIES
@@ -252,4 +273,5 @@ message(
     "* JACK (optional)              : ${STATUS_JACK}\n"
     "* PulseAudio (optional)        : ${STATUS_PULSEAUDIO}\n"
     "* ALSA (optional)              : ${STATUS_ALSA}\n"
+    "* CoreAudio (optional)         : ${STATUS_COREAUDIO}\n"
 )
diff --git a/README.md b/README.md
index 62728e2..0196688 100644
--- a/README.md
+++ b/README.md
@@ -23,8 +23,8 @@ behavior on every platform.
    - [JACK](http://jackaudio.org/)
    - [PulseAudio](http://www.freedesktop.org/wiki/Software/PulseAudio/)
    - [ALSA](http://www.alsa-project.org/)
-   - Dummy (silence)
    - (planned) [CoreAudio](https://developer.apple.com/library/mac/documentation/MusicAudio/Conceptual/CoreAudioOverview/Introduction/Introduction.html)
+   - Dummy (silence)
    - (planned) [WASAPI](https://msdn.microsoft.com/en-us/library/windows/desktop/dd371455%28v=vs.85%29.aspx)
    - (planned) [ASIO](http://www.asio4all.com/)
  * C library. Depends only on the respective backend API libraries and libc.
diff --git a/cmake/FindCoreAudio.cmake b/cmake/FindCoreAudio.cmake
new file mode 100644
index 0000000..9bbd752
--- /dev/null
+++ b/cmake/FindCoreAudio.cmake
@@ -0,0 +1,16 @@
+# Copyright (c) 2015 Andrew Kelley
+# This file is MIT licensed.
+# See http://opensource.org/licenses/MIT
+
+# COREAUDIO_FOUND
+# COREAUDIO_INCLUDE_DIR
+# COREAUDIO_LIBRARY
+
+find_path(COREAUDIO_INCLUDE_DIR NAMES CoreAudio.h)
+
+find_library(COREAUDIO_LIBRARY NAMES CoreAudio)
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(COREAUDIO DEFAULT_MSG COREAUDIO_LIBRARY COREAUDIO_INCLUDE_DIR)
+
+mark_as_advanced(COREAUDIO_INCLUDE_DIR COREAUDIO_LIBRARY)
diff --git a/soundio/soundio.h b/soundio/soundio.h
index 6a310bf..8ed1aef 100644
--- a/soundio/soundio.h
+++ b/soundio/soundio.h
@@ -108,6 +108,7 @@ enum SoundIoBackend {
     SoundIoBackendJack,
     SoundIoBackendPulseAudio,
     SoundIoBackendAlsa,
+    SoundIoBackendCoreAudio,
     SoundIoBackendDummy,
 };
 
diff --git a/src/config.h.in b/src/config.h.in
index 5fc8912..38c7c2e 100644
--- a/src/config.h.in
+++ b/src/config.h.in
@@ -19,5 +19,6 @@
 #cmakedefine SOUNDIO_HAVE_JACK
 #cmakedefine SOUNDIO_HAVE_PULSEAUDIO
 #cmakedefine SOUNDIO_HAVE_ALSA
+#cmakedefine SOUNDIO_HAVE_COREAUDIO
 
 #endif
diff --git a/src/coreaudio.cpp b/src/coreaudio.cpp
new file mode 100644
index 0000000..36e5f46
--- /dev/null
+++ b/src/coreaudio.cpp
@@ -0,0 +1,102 @@
+#include "coreaudio.hpp"
+#include "soundio.hpp"
+
+static void destroy_ca(struct SoundIoPrivate *) {
+    soundio_panic("TODO");
+}
+
+static void flush_events_ca(struct SoundIoPrivate *) {
+    soundio_panic("TODO");
+}
+
+static void wait_events_ca(struct SoundIoPrivate *) {
+    soundio_panic("TODO");
+}
+
+static void wakeup_ca(struct SoundIoPrivate *) {
+    soundio_panic("TODO");
+}
+
+
+static int outstream_open_ca(struct SoundIoPrivate *, struct SoundIoOutStreamPrivate *) {
+    soundio_panic("TODO");
+}
+
+static void outstream_destroy_ca(struct SoundIoPrivate *, struct SoundIoOutStreamPrivate *) {
+    soundio_panic("TODO");
+}
+
+static int outstream_start_ca(struct SoundIoPrivate *, struct SoundIoOutStreamPrivate *) {
+    soundio_panic("TODO");
+}
+
+static int outstream_begin_write_ca(struct SoundIoPrivate *, struct SoundIoOutStreamPrivate *,
+        SoundIoChannelArea **out_areas, int *frame_count)
+{
+    soundio_panic("TODO");
+}
+
+static int outstream_end_write_ca(struct SoundIoPrivate *, struct SoundIoOutStreamPrivate *, int frame_count) {
+    soundio_panic("TODO");
+}
+
+static int outstream_clear_buffer_ca(struct SoundIoPrivate *, struct SoundIoOutStreamPrivate *) {
+    soundio_panic("TODO");
+}
+
+static int outstream_pause_ca(struct SoundIoPrivate *, struct SoundIoOutStreamPrivate *, bool pause) {
+    soundio_panic("TODO");
+}
+
+
+
+static int instream_open_ca(struct SoundIoPrivate *, struct SoundIoInStreamPrivate *) {
+    soundio_panic("TODO");
+}
+
+static void instream_destroy_ca(struct SoundIoPrivate *, struct SoundIoInStreamPrivate *) {
+    soundio_panic("TODO");
+}
+
+static int instream_start_ca(struct SoundIoPrivate *, struct SoundIoInStreamPrivate *) {
+    soundio_panic("TODO");
+}
+
+static int instream_begin_read_ca(struct SoundIoPrivate *, struct SoundIoInStreamPrivate *,
+        SoundIoChannelArea **out_areas, int *frame_count)
+{
+    soundio_panic("TODO");
+}
+
+static int instream_end_read_ca(struct SoundIoPrivate *, struct SoundIoInStreamPrivate *) {
+    soundio_panic("TODO");
+}
+
+static int instream_pause_ca(struct SoundIoPrivate *, struct SoundIoInStreamPrivate *, bool pause) {
+    soundio_panic("TODO");
+}
+
+
+int soundio_coreaudio_init(SoundIoPrivate *si) {
+    si->destroy = destroy_ca;
+    si->flush_events = flush_events_ca;
+    si->wait_events = wait_events_ca;
+    si->wakeup = wakeup_ca;
+
+    si->outstream_open = outstream_open_ca;
+    si->outstream_destroy = outstream_destroy_ca;
+    si->outstream_start = outstream_start_ca;
+    si->outstream_begin_write = outstream_begin_write_ca;
+    si->outstream_end_write = outstream_end_write_ca;
+    si->outstream_clear_buffer = outstream_clear_buffer_ca;
+    si->outstream_pause = outstream_pause_ca;
+
+    si->instream_open = instream_open_ca;
+    si->instream_destroy = instream_destroy_ca;
+    si->instream_start = instream_start_ca;
+    si->instream_begin_read = instream_begin_read_ca;
+    si->instream_end_read = instream_end_read_ca;
+    si->instream_pause = instream_pause_ca;
+
+    return 0;
+}
diff --git a/src/coreaudio.hpp b/src/coreaudio.hpp
new file mode 100644
index 0000000..c06afcc
--- /dev/null
+++ b/src/coreaudio.hpp
@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2015 Andrew Kelley
+ *
+ * This file is part of libsoundio, which is MIT licensed.
+ * See http://opensource.org/licenses/MIT
+ */
+
+#ifndef SOUNDIO_COREAUDIO_HPP
+#define SOUNDIO_COREAUDIO_HPP
+
+#include "soundio/soundio.h"
+
+int soundio_coreaudio_init(struct SoundIoPrivate *si);
+
+struct SoundIoDeviceCoreAudio {
+};
+
+struct SoundIoCoreAudio {
+};
+
+struct SoundIoOutStreamCoreAudioPort {
+};
+
+struct SoundIoOutStreamCoreAudio {
+};
+
+struct SoundIoInStreamCoreAudioPort {
+};
+
+struct SoundIoInStreamCoreAudio {
+};
+
+#endif
diff --git a/src/soundio.cpp b/src/soundio.cpp
index b3af5c5..d98ae2c 100644
--- a/src/soundio.cpp
+++ b/src/soundio.cpp
@@ -22,6 +22,9 @@ static const SoundIoBackend available_backends[] = {
 #endif
 #ifdef SOUNDIO_HAVE_ALSA
     SoundIoBackendAlsa,
+#endif
+#ifdef SOUNDIO_HAVE_COREAUDIO
+    SoundIoBackendCoreAudio,
 #endif
     SoundIoBackendDummy,
 };
@@ -42,6 +45,11 @@ static int (*backend_init_fns[])(SoundIoPrivate *) = {
     [SoundIoBackendAlsa] = soundio_alsa_init,
 #else
     [SoundIoBackendAlsa] = nullptr,
+#endif
+#ifdef SOUNDIO_HAVE_COREAUDIO
+    [SoundIoBackendCoreAudio] = soundio_coreaudio_init,
+#else
+    [SoundIoBackendCoreAudio] = nullptr,
 #endif
     [SoundIoBackendDummy] = soundio_dummy_init,
 };
@@ -126,6 +134,7 @@ const char *soundio_backend_name(enum SoundIoBackend backend) {
         case SoundIoBackendJack: return "JACK";
         case SoundIoBackendPulseAudio: return "PulseAudio";
         case SoundIoBackendAlsa: return "ALSA";
+        case SoundIoBackendCoreAudio: return "CoreAudio";
         case SoundIoBackendDummy: return "Dummy";
     }
     return "(invalid backend)";
diff --git a/src/soundio.hpp b/src/soundio.hpp
index 03619dc..e229400 100644
--- a/src/soundio.hpp
+++ b/src/soundio.hpp
@@ -23,6 +23,10 @@
 #include "alsa.hpp"
 #endif
 
+#ifdef SOUNDIO_HAVE_COREAUDIO
+#include "coreaudio.hpp"
+#endif
+
 #include "dummy.hpp"
 
 union SoundIoBackendData {
@@ -34,6 +38,9 @@ union SoundIoBackendData {
 #endif
 #ifdef SOUNDIO_HAVE_ALSA
     SoundIoAlsa alsa;
+#endif
+#ifdef SOUNDIO_HAVE_COREAUDIO
+    SoundIoCoreAudio coreaudio;
 #endif
     SoundIoDummy dummy;
 };
@@ -47,6 +54,9 @@ union SoundIoDeviceBackendData {
 #endif
 #ifdef SOUNDIO_HAVE_ALSA
     SoundIoDeviceAlsa alsa;
+#endif
+#ifdef SOUNDIO_HAVE_COREAUDIO
+    SoundIoDeviceCoreAudio coreaudio;
 #endif
     SoundIoDeviceDummy dummy;
 };
@@ -60,6 +70,9 @@ union SoundIoOutStreamBackendData {
 #endif
 #ifdef SOUNDIO_HAVE_ALSA
     SoundIoOutStreamAlsa alsa;
+#endif
+#ifdef SOUNDIO_HAVE_COREAUDIO
+    SoundIoOutStreamCoreAudio coreaudio;
 #endif
     SoundIoOutStreamDummy dummy;
 };
@@ -73,6 +86,9 @@ union SoundIoInStreamBackendData {
 #endif
 #ifdef SOUNDIO_HAVE_ALSA
     SoundIoInStreamAlsa alsa;
+#endif
+#ifdef SOUNDIO_HAVE_COREAUDIO
+    SoundIoInStreamCoreAudio coreaudio;
 #endif
     SoundIoInStreamDummy dummy;
 };
@@ -101,7 +117,6 @@ struct SoundIoPrivate {
     // Safe to read from a single thread without a mutex.
     struct SoundIoDevicesInfo *safe_devices_info;
 
-    SoundIoBackendData backend_data;
     void (*destroy)(struct SoundIoPrivate *);
     void (*flush_events)(struct SoundIoPrivate *);
     void (*wait_events)(struct SoundIoPrivate *);
@@ -124,6 +139,8 @@ struct SoundIoPrivate {
             SoundIoChannelArea **out_areas, int *frame_count);
     int (*instream_end_read)(struct SoundIoPrivate *, struct SoundIoInStreamPrivate *);
     int (*instream_pause)(struct SoundIoPrivate *, struct SoundIoInStreamPrivate *, bool pause);
+
+    SoundIoBackendData backend_data;
 };
 
 struct SoundIoDevicePrivate {