diff --git a/docs/reference.md b/docs/reference.md
index 6d951a5..4c67971 100644
--- a/docs/reference.md
+++ b/docs/reference.md
@@ -8484,6 +8484,7 @@
     *   --args: Specifies build arguments overrides.
     *   --color: Force colored output.
     *   --dotfile: Override the name of the ".gn" file.
+    *   --error-limit: Limit the number of errors or warnings to print.
     *   --fail-on-unused-args: Treat unused build args as fatal errors.
     *   --markdown: Write help output in the Markdown format.
     *   --ninja-executable: Set the Ninja executable.
diff --git a/src/gn/command_check.cc b/src/gn/command_check.cc
index fccfebb..eba8c70 100644
--- a/src/gn/command_check.cc
+++ b/src/gn/command_check.cc
@@ -277,7 +277,8 @@
   for (size_t i = 0; i < header_errors.size(); i++) {
     if (i > 0)
       OutputString("___________________\n", DECORATION_YELLOW);
-    header_errors[i].PrintToStdout();
+    if (!header_errors[i].PrintToStdout())
+      break;
   }
   return header_errors.empty();
 }
diff --git a/src/gn/command_gen.cc b/src/gn/command_gen.cc
index 8c2a45a..4f951d4 100644
--- a/src/gn/command_gen.cc
+++ b/src/gn/command_gen.cc
@@ -155,7 +155,8 @@
 
 // Prints an error that the given file was present as a source or input in
 // the given target(s) but was not generated by any of its dependencies.
-void PrintInvalidGeneratedInput(const Builder& builder,
+// Returns true if the error was actually printed, or false if it was suppressed.
+bool PrintInvalidGeneratedInput(const Builder& builder,
                                 const SourceFile& file,
                                 const std::vector<const Target*>& targets) {
   std::string err;
@@ -192,8 +193,8 @@
     err += "but no targets in the build generate that file.";
   }
 
-  Err(Location(), "Input to " + target_str + " not generated by a dependency.",
-      err)
+  return Err(Location(), "Input to " + target_str + " not generated by a dependency.",
+             err)
       .PrintToStdout();
 }
 
@@ -204,19 +205,28 @@
     return true;  // No bad files.
 
   int errors_found = 0;
+  bool print_errors = true;
   auto cur = unknown_inputs.begin();
   while (cur != unknown_inputs.end()) {
     errors_found++;
     auto end_of_range = unknown_inputs.upper_bound(cur->first);
 
-    // Package the values more conveniently for printing.
-    SourceFile bad_input = cur->first;
-    std::vector<const Target*> targets;
-    while (cur != end_of_range)
-      targets.push_back((cur++)->second);
+    if (print_errors) {
+      // Package the values more conveniently for printing.
+      SourceFile bad_input = cur->first;
+      std::vector<const Target*> targets;
+      auto temp_cur = cur;
+      while (temp_cur != end_of_range)
+        targets.push_back((temp_cur++)->second);
 
-    PrintInvalidGeneratedInput(setup->builder(), bad_input, targets);
-    OutputString("\n");
+      if (PrintInvalidGeneratedInput(setup->builder(), bad_input, targets)) {
+        OutputString("\n");
+      } else {
+        print_errors = false;
+      }
+    }
+
+    cur = end_of_range;
   }
 
   OutputString(
diff --git a/src/gn/err.cc b/src/gn/err.cc
index e3f71c9..627fdf8 100644
--- a/src/gn/err.cc
+++ b/src/gn/err.cc
@@ -6,17 +6,42 @@
 
 #include <stddef.h>
 
+#include <atomic>
+#include <mutex>
+
+#include "base/command_line.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "gn/filesystem_utils.h"
 #include "gn/input_file.h"
 #include "gn/parse_tree.h"
 #include "gn/standard_out.h"
+#include "gn/switches.h"
 #include "gn/tokenizer.h"
 #include "gn/value.h"
 
 namespace {
 
+std::atomic<int> g_num_errors_printed{0};
+
+int GetErrorLimit() {
+  static int g_error_limit = 10;
+  static std::once_flag flag;
+  std::call_once(flag, []() {
+    if (base::CommandLine::InitializedForCurrentProcess()) {
+      const base::CommandLine* cmdline = base::CommandLine::ForCurrentProcess();
+      if (cmdline && cmdline->HasSwitch(switches::kErrorLimit)) {
+        std::string limit_str = cmdline->GetSwitchValueString(switches::kErrorLimit);
+        int parsed_limit;
+        if (base::StringToInt(limit_str, &parsed_limit)) {
+          g_error_limit = parsed_limit;
+        }
+      }
+    }
+  });
+  return g_error_limit;
+}
+
 std::string GetNthLine(std::string_view data, int n) {
   size_t line_off = Tokenizer::ByteOffsetOfNthLine(data, n);
   size_t end = line_off + 1;
@@ -140,22 +165,36 @@
   return *this;
 }
 
-void Err::PrintToStdout() const {
-  InternalPrintToStdout(false, true);
+bool Err::PrintToStdout() const {
+  return InternalPrintToStdout(false, true);
 }
 
-void Err::PrintNonfatalToStdout() const {
-  InternalPrintToStdout(false, false);
+bool Err::PrintNonfatalToStdout() const {
+  return InternalPrintToStdout(false, false);
 }
 
 void Err::AppendSubErr(const Err& err) {
   info_->sub_errs.push_back(err);
 }
 
-void Err::InternalPrintToStdout(bool is_sub_err, bool is_fatal) const {
+bool Err::InternalPrintToStdout(bool is_sub_err, bool is_fatal) const {
   DCHECK(info_);
 
   if (!is_sub_err) {
+    int limit = GetErrorLimit();
+    if (limit >= 0) {
+      int printed = ++g_num_errors_printed;
+      if (printed > limit) {
+        if (printed == limit + 1) {
+          OutputString(
+              "Too many errors/warnings. Suppressing further messages.\n"
+              "You can change the limit by passing --error-limit=<number>.\n",
+              DECORATION_RED);
+        }
+        return false;
+      }
+    }
+
     if (is_fatal)
       OutputString("ERROR ", DECORATION_RED);
     else
@@ -200,4 +239,6 @@
   // Sub errors.
   for (const auto& sub_err : info_->sub_errs)
     sub_err.InternalPrintToStdout(true, is_fatal);
+
+  return true;
 }
diff --git a/src/gn/err.h b/src/gn/err.h
index 6e50b37..c67da5d 100644
--- a/src/gn/err.h
+++ b/src/gn/err.h
@@ -98,7 +98,12 @@
 
   void AppendSubErr(const Err& err);
 
-  void PrintToStdout() const;
+  // Prints the error to standard out.
+  // Returns true if the error was actually printed, or false if it was
+  // suppressed (e.g., due to reaching the error limit). Callers can use this
+  // return value to determine whether to print additional formatting like
+  // newlines or separators.
+  bool PrintToStdout() const;
 
   // Prints to standard out but uses a "WARNING" messaging instead of the
   // normal "ERROR" messaging. This is a property of the printing system rather
@@ -110,10 +115,12 @@
   // nonfatal error to the screen instead of returning it. In these cases, that
   // code can decide at printing time whether it will continue (and use this
   // method) or not (and use PrintToStdout()).
-  void PrintNonfatalToStdout() const;
+  //
+  // Returns true if the warning was actually printed, or false if suppressed.
+  bool PrintNonfatalToStdout() const;
 
  private:
-  void InternalPrintToStdout(bool is_sub_err, bool is_fatal) const;
+  bool InternalPrintToStdout(bool is_sub_err, bool is_fatal) const;
 
   std::unique_ptr<ErrInfo> info_;  // Non-null indicates error.
 };
diff --git a/src/gn/switches.cc b/src/gn/switches.cc
index bf0c753..4081695 100644
--- a/src/gn/switches.cc
+++ b/src/gn/switches.cc
@@ -65,6 +65,17 @@
   use a different file.
 )";
 
+const char kErrorLimit[] = "error-limit";
+const char kErrorLimit_HelpShort[] =
+    "--error-limit: Limit the number of errors or warnings to print.";
+const char kErrorLimit_Help[] =
+    R"(--error-limit: Limit the number of errors or warnings to print.
+
+  By default, GN limits the number of printed errors or warnings to 10.
+  Setting this will change the limit. Passing -1 will print all errors
+  and warnings without any limit.
+)";
+
 const char kFailOnUnusedArgs[] = "fail-on-unused-args";
 const char kFailOnUnusedArgs_HelpShort[] =
     "--fail-on-unused-args: Treat unused build args as fatal errors.";
@@ -333,6 +344,7 @@
     INSERT_VARIABLE(Args)
     INSERT_VARIABLE(Color)
     INSERT_VARIABLE(Dotfile)
+    INSERT_VARIABLE(ErrorLimit)
     INSERT_VARIABLE(FailOnUnusedArgs)
     INSERT_VARIABLE(Markdown)
     INSERT_VARIABLE(NinjaExecutable)
diff --git a/src/gn/switches.h b/src/gn/switches.h
index 57d3828..5fe34e7 100644
--- a/src/gn/switches.h
+++ b/src/gn/switches.h
@@ -38,6 +38,10 @@
 extern const char kDotfile_HelpShort[];
 extern const char kDotfile_Help[];
 
+extern const char kErrorLimit[];
+extern const char kErrorLimit_HelpShort[];
+extern const char kErrorLimit_Help[];
+
 extern const char kFailOnUnusedArgs[];
 extern const char kFailOnUnusedArgs_HelpShort[];
 extern const char kFailOnUnusedArgs_Help[];