diff --git a/spacy/cli/train.py b/spacy/cli/train.py
index fe1e82eb2..0120ec08a 100644
--- a/spacy/cli/train.py
+++ b/spacy/cli/train.py
@@ -18,7 +18,7 @@ from .. import util
 def train_cli(
     # fmt: off
     ctx: typer.Context,  # This is only used to read additional arguments
-    config_path: Path = Arg(..., help="Path to config file", exists=True),
+    config_path: Path = Arg(..., help="Path to config file", exists=True, allow_dash=True),
     output_path: Optional[Path] = Opt(None, "--output", "--output-path", "-o", help="Output directory to store trained pipeline in"),
     code_path: Optional[Path] = Opt(None, "--code", "-c", help="Path to Python file with additional code (registered functions) to be imported"),
     verbose: bool = Opt(False, "--verbose", "-V", "-VV", help="Display more information for debugging purposes"),
@@ -41,7 +41,7 @@ def train_cli(
     """
     util.logger.setLevel(logging.DEBUG if verbose else logging.INFO)
     # Make sure all files and paths exists if they are needed
-    if not config_path or not config_path.exists():
+    if not config_path or (str(config_path) != "-" and not config_path.exists()):
         msg.fail("Config file not found", config_path, exits=1)
     if output_path is not None and not output_path.exists():
         output_path.mkdir(parents=True)
diff --git a/spacy/util.py b/spacy/util.py
index 8335a4fcc..60723b85e 100644
--- a/spacy/util.py
+++ b/spacy/util.py
@@ -465,18 +465,24 @@ def load_config(
 ) -> Config:
     """Load a config file. Takes care of path validation and section order.
 
-    path (Union[str, Path]): Path to the config file.
+    path (Union[str, Path]): Path to the config file or "-" to read from stdin.
     overrides: (Dict[str, Any]): Config overrides as nested dict or
         dict keyed by section values in dot notation.
     interpolate (bool): Whether to interpolate and resolve variables.
     RETURNS (Config): The loaded config.
     """
     config_path = ensure_path(path)
-    if not config_path.exists() or not config_path.is_file():
-        raise IOError(Errors.E053.format(path=config_path, name="config.cfg"))
-    return Config(section_order=CONFIG_SECTION_ORDER).from_disk(
-        config_path, overrides=overrides, interpolate=interpolate
-    )
+    config = Config(section_order=CONFIG_SECTION_ORDER)
+    if str(config_path) == "-":  # read from standard input
+        return config.from_str(
+            sys.stdin.read(), overrides=overrides, interpolate=interpolate
+        )
+    else:
+        if not config_path or not config_path.exists() or not config_path.is_file():
+            raise IOError(Errors.E053.format(path=config_path, name="config.cfg"))
+        return config.from_disk(
+            config_path, overrides=overrides, interpolate=interpolate
+        )
 
 
 def load_config_from_str(