diff --git a/src_c/key.c b/src_c/key.c
index 44ea2457c2..3de4387839 100644
--- a/src_c/key.c
+++ b/src_c/key.c
@@ -80,7 +80,11 @@ pg_scancodewrapper_subscript(pgScancodeWrapper *self, PyObject *item)
     PyObject *adjustedvalue, *ret;
     if ((index = PyLong_AsLong(item)) == -1 && PyErr_Occurred())
         return NULL;
+#if SDL_VERSION_ATLEAST(3, 0, 0)
+    index = SDL_GetScancodeFromKey(index, NULL);
+#else
     index = SDL_GetScancodeFromKey(index);
+#endif
     adjustedvalue = PyLong_FromLong(index);
     ret = PyTuple_Type.tp_as_mapping->mp_subscript((PyObject *)self,
                                                    adjustedvalue);
@@ -163,7 +167,11 @@ static PyObject *
 key_get_pressed(PyObject *self, PyObject *_null)
 {
     int num_keys;
+#if SDL_VERSION_ATLEAST(3, 0, 0)
+    const bool *key_state;
+#else
     const Uint8 *key_state;
+#endif
     PyObject *ret_obj = NULL;
     PyObject *key_tuple;
     int i;
@@ -511,16 +519,42 @@ key_get_focused(PyObject *self, PyObject *_null)
 static PyObject *
 key_start_text_input(PyObject *self, PyObject *_null)
 {
+#if SDL_VERSION_ATLEAST(3, 0, 0)
+    /* Can consider making this a method of the Window class, this function
+     * just does backcompat */
+    SDL_Window *win = pg_GetDefaultWindow();
+    if (!win) {
+        return RAISE(pgExc_SDLError,
+                     "display.set_mode has not been called yet.");
+    }
+    if (!SDL_StartTextInput(win)) {
+        return RAISE(pgExc_SDLError, SDL_GetError());
+    }
+#else
     /* https://wiki.libsdl.org/SDL_StartTextInput */
     SDL_StartTextInput();
+#endif
     Py_RETURN_NONE;
 }
 
 static PyObject *
 key_stop_text_input(PyObject *self, PyObject *_null)
 {
+#if SDL_VERSION_ATLEAST(3, 0, 0)
+    /* Can consider making this a method of the Window class, this function
+     * just does backcompat */
+    SDL_Window *win = pg_GetDefaultWindow();
+    if (!win) {
+        return RAISE(pgExc_SDLError,
+                     "display.set_mode has not been called yet.");
+    }
+    if (!SDL_StopTextInput(win)) {
+        return RAISE(pgExc_SDLError, SDL_GetError());
+    }
+#else
     /* https://wiki.libsdl.org/SDL_StopTextInput */
     SDL_StopTextInput();
+#endif
     Py_RETURN_NONE;
 }
 
@@ -552,11 +586,23 @@ key_set_text_input_rect(PyObject *self, PyObject *obj)
         rect2.w = (int)(rect->w * scalex);
         rect2.h = (int)(rect->h * scaley);
 
+#if SDL_VERSION_ATLEAST(3, 0, 0)
+        /* Should consider how to expose the cursor argument to the user, maybe
+         * this should be new API in Window? */
+        SDL_SetTextInputArea(sdlWindow, &rect2, 0);
+#else
         SDL_SetTextInputRect(&rect2);
+#endif
         Py_RETURN_NONE;
     }
 
+#if SDL_VERSION_ATLEAST(3, 0, 0)
+    /* Should consider how to expose the cursor argument to the user, maybe
+     * this should be new API in Window? */
+    SDL_SetTextInputArea(sdlWindow, rect, 0);
+#else
     SDL_SetTextInputRect(rect);
+#endif
 
     Py_RETURN_NONE;
 }
diff --git a/src_c/meson.build b/src_c/meson.build
index fb43a584eb..ca8205a7e8 100644
--- a/src_c/meson.build
+++ b/src_c/meson.build
@@ -54,8 +54,6 @@ event = py.extension_module(
 )
 endif
 
-# TODO: support SDL3
-if sdl_api != 3
 key = py.extension_module(
     'key',
     'key.c',
@@ -64,10 +62,7 @@ key = py.extension_module(
     install: true,
     subdir: pg,
 )
-endif
 
-# TODO: support SDL3
-if sdl_api != 3
 mouse = py.extension_module(
     'mouse',
     'mouse.c',
@@ -76,7 +71,6 @@ mouse = py.extension_module(
     install: true,
     subdir: pg,
 )
-endif
 
 rect = py.extension_module(
     'rect',
diff --git a/src_c/mouse.c b/src_c/mouse.c
index b6a5ae9195..97f7b0345c 100644
--- a/src_c/mouse.c
+++ b/src_c/mouse.c
@@ -65,7 +65,14 @@ mouse_set_pos(PyObject *self, PyObject *args)
 static PyObject *
 mouse_get_pos(PyObject *self, PyObject *args, PyObject *kwargs)
 {
+#if SDL_VERSION_ATLEAST(3, 0, 0)
+    /* SDL3 changed the mouse API to deal with float coordinates, for now we
+     * still truncate the result to int before returning to python side.
+     * This can be changed in a breaking release in the future if needed. */
+    float x, y;
+#else
     int x, y;
+#endif
     int desktop = 0;
 
     static char *kwids[] = {"desktop", NULL};
@@ -114,7 +121,14 @@ mouse_get_pos(PyObject *self, PyObject *args, PyObject *kwargs)
 static PyObject *
 mouse_get_rel(PyObject *self, PyObject *_null)
 {
+#if SDL_VERSION_ATLEAST(3, 0, 0)
+    /* SDL3 changed the mouse API to deal with float coordinates, for now we
+     * still truncate the result to int before returning to python side.
+     * This can be changed in a breaking release in the future if needed. */
+    float x, y;
+#else
     int x, y;
+#endif
 
     VIDEO_INIT_CHECK();
 
@@ -224,6 +238,10 @@ mouse_set_visible(PyObject *self, PyObject *args)
 
     win = pg_GetDefaultWindow();
     if (win) {
+#if SDL_VERSION_ATLEAST(3, 0, 0)
+        SDL_SetWindowRelativeMouseMode(win,
+                                       SDL_GetWindowMouseGrab(win) && !toggle);
+#else
         int mode = SDL_GetWindowGrab(win);
         if ((mode == SDL_ENABLE) & !toggle) {
             SDL_SetRelativeMouseMode(1);
@@ -231,6 +249,7 @@ mouse_set_visible(PyObject *self, PyObject *args)
         else {
             SDL_SetRelativeMouseMode(0);
         }
+#endif
         window_flags = SDL_GetWindowFlags(win);
         if (!toggle && (window_flags & PG_WINDOW_FULLSCREEN_INCLUSIVE)) {
             SDL_SetHint(SDL_HINT_WINDOW_FRAME_USABLE_WHILE_CURSOR_HIDDEN, "0");
@@ -263,7 +282,13 @@ mouse_get_visible(PyObject *self, PyObject *_null)
 
     VIDEO_INIT_CHECK();
 
+#if SDL_VERSION_ATLEAST(3, 0, 0)
+    SDL_Window *win = pg_GetDefaultWindow();
+    result =
+        win ? (PG_CursorVisible() && !SDL_GetWindowRelativeMouseMode(win)) : 0;
+#else
     result = (PG_CursorVisible() && !SDL_GetRelativeMouseMode());
+#endif
 
     if (0 > result) {
         return RAISE(pgExc_SDLError, SDL_GetError());
@@ -527,7 +552,12 @@ mouse_get_cursor(PyObject *self, PyObject *_null)
 static PyObject *
 mouse_get_relative_mode(PyObject *self)
 {
+#if SDL_VERSION_ATLEAST(3, 0, 0)
+    SDL_Window *win = pg_GetDefaultWindow();
+    return PyBool_FromLong(win ? SDL_GetWindowRelativeMouseMode(win) : 0);
+#else
     return PyBool_FromLong(SDL_GetRelativeMouseMode());
+#endif
 }
 
 static PyObject *
@@ -537,9 +567,20 @@ mouse_set_relative_mode(PyObject *self, PyObject *arg)
     if (mode == -1) {
         return NULL;
     }
+#if SDL_VERSION_ATLEAST(3, 0, 0)
+    SDL_Window *win = pg_GetDefaultWindow();
+    if (!win) {
+        return RAISE(pgExc_SDLError,
+                     "display.set_mode has not been called yet.");
+    }
+    if (!SDL_SetWindowRelativeMouseMode(win, (bool)mode)) {
+        return RAISE(pgExc_SDLError, SDL_GetError());
+    }
+#else
     if (SDL_SetRelativeMouseMode((SDL_bool)mode)) {
         return RAISE(pgExc_SDLError, SDL_GetError());
     }
+#endif
     Py_RETURN_NONE;
 }