diff --git a/esphome/components/rp2040/generate_boards.py b/esphome/components/rp2040/generate_boards.py
index 25bf8a5346..63df8d4252 100644
--- a/esphome/components/rp2040/generate_boards.py
+++ b/esphome/components/rp2040/generate_boards.py
@@ -8,6 +8,8 @@ from pathlib import Path
 import re
 import sys
 
+from jinja2 import Environment, FileSystemLoader
+
 # Map arduino-pico pin defines to ESPHome-friendly names
 PIN_NAME_MAP = {
     "LED": "LED",
@@ -123,49 +125,36 @@ def _get_variant(json_file: Path) -> str | None:
     return data.get("build", {}).get("variant")
 
 
-def format_pins(pins: dict[str, int] | str) -> str:
-    """Format a pin dict or alias as Python source."""
+_TEMPLATE_DIR = Path(__file__).parent
+
+
+def _format_pins(pins: dict[str, int] | str) -> str:
+    """Jinja2 filter to format a pin dict or alias as Python source."""
     if isinstance(pins, str):
-        return f'"{pins}"'
-    items = ", ".join(f'"{k}": {v}' for k, v in sorted(pins.items()))
+        return repr(pins)
+    items = ", ".join(f"{k!r}: {v}" for k, v in sorted(pins.items()))
     return f"{{{items}}}"
 
 
+_jinja_env = Environment(
+    loader=FileSystemLoader(_TEMPLATE_DIR), keep_trailing_newline=True
+)
+_jinja_env.filters["format_pins"] = _format_pins
+_jinja_env.filters["repr"] = repr
+
+
 def generate(arduino_pico_path: Path) -> str:
     """Generate boards.py content."""
     board_pins, boards = load_boards(arduino_pico_path)
 
-    lines = [
-        "# Auto-generated by generate_boards.py — do not edit manually",
-        "# To regenerate: python esphome/components/rp2040/generate_boards.py <arduino-pico-path>",
-        "",
-        f"# arduino-pico maps pins >= {CYW43_GPIO_OFFSET} to CYW43 wireless chip GPIOs",
-        f"CYW43_GPIO_OFFSET = {CYW43_GPIO_OFFSET}",
-        f"CYW43_MAX_GPIO = {CYW43_GPIO_OFFSET + CYW43_GPIO_COUNT - 1}",
-        f"DEFAULT_MAX_PIN = {DEFAULT_MAX_PIN}",
-        "",
-        "RP2040_BASE_PINS = {}",
-        "",
-        "RP2040_BOARD_PINS = {",
-    ]
-
-    for name, pins in sorted(board_pins.items()):
-        lines.append(f"    {name!r}: {format_pins(pins)},")
-
-    lines.append("}")
-    lines.append("")
-    lines.append("BOARDS = {")
-
-    for name, info in sorted(boards.items()):
-        lines.append(f"    {name!r}: {{")
-        for key, value in info.items():
-            lines.append(f"        {key!r}: {value!r},")
-        lines.append("    },")
-
-    lines.append("}")
-    lines.append("")
-
-    return "\n".join(lines)
+    template = _jinja_env.get_template("boards.jinja2")
+    return template.render(
+        cyw43_gpio_offset=CYW43_GPIO_OFFSET,
+        cyw43_max_gpio=CYW43_GPIO_OFFSET + CYW43_GPIO_COUNT - 1,
+        default_max_pin=DEFAULT_MAX_PIN,
+        board_pins=sorted(board_pins.items()),
+        boards=sorted(boards.items()),
+    )
 
 
 def main():