diff --git a/esphome/components/esp32/__init__.py b/esphome/components/esp32/__init__.py
index 64e5f44081..f85f13fe73 100644
--- a/esphome/components/esp32/__init__.py
+++ b/esphome/components/esp32/__init__.py
@@ -1920,6 +1920,18 @@ async def to_code(config):
         add_idf_sdkconfig_option("CONFIG_MBEDTLS_SHA384_C", False)
         add_idf_sdkconfig_option("CONFIG_MBEDTLS_SHA512_C", False)
 
+    # Disable PicolibC Newlib compatibility shim on IDF 6.0+
+    # IDF 6.0 switched from Newlib to PicolibC. The shim provides thread-local
+    # stdin/stdout/stderr and getreent() for code compiled against Newlib.
+    # ESPHome doesn't link against Newlib-built libraries that use stdio.
+    # If a component needs it (e.g. precompiled Newlib binaries), re-enable via:
+    #   esp32:
+    #     framework:
+    #       sdkconfig_options:
+    #         CONFIG_LIBC_PICOLIBC_NEWLIB_COMPATIBILITY: "y"
+    if idf_version() >= cv.Version(6, 0, 0):
+        add_idf_sdkconfig_option("CONFIG_LIBC_PICOLIBC_NEWLIB_COMPATIBILITY", False)
+
     # Disable regi2c control functions in IRAM
     # Only needed if using analog peripherals (ADC, DAC, etc.) from ISRs while cache is disabled
     if advanced[CONF_DISABLE_REGI2C_IN_IRAM]: