diff --git a/optimum/exporters/onnx/model_configs.py b/optimum/exporters/onnx/model_configs.py
index 92d0dce..af4fcce 100644
--- a/optimum/exporters/onnx/model_configs.py
+++ b/optimum/exporters/onnx/model_configs.py
@@ -517,6 +517,15 @@ class Gemma2OnnxConfig(TextDecoderOnnxConfig):
     MIN_TRANSFORMERS_VERSION = version.parse("4.53.0")
 
 
+@register_tasks_manager_onnx("gemma3", *[*COMMON_TEXT_GENERATION_TASKS, "text-classification"])
+class Gemma3OnnxConfig(TextDecoderOnnxConfig):
+    NORMALIZED_CONFIG_CLASS = NormalizedTextConfig
+    DUMMY_INPUT_GENERATOR_CLASSES = (DummyTextInputGenerator, GemmaDummyPastKeyValuesGenerator)
+    DUMMY_PKV_GENERATOR_CLASS = GemmaDummyPastKeyValuesGenerator
+    # Gemma 3 was added in transformers v4.50.0
+    MIN_TRANSFORMERS_VERSION = version.parse("4.50.0")
+
+
 @register_tasks_manager_onnx("gpt_oss", *COMMON_TEXT_GENERATION_TASKS)
 class GPTOssOnnxConfig(GemmaOnnxConfig):
     MIN_TRANSFORMERS_VERSION = version.parse("4.55.0")
diff --git a/optimum/exporters/onnx/utils.py b/optimum/exporters/onnx/utils.py
index 4d0b841..3b7e010 100644
--- a/optimum/exporters/onnx/utils.py
+++ b/optimum/exporters/onnx/utils.py
@@ -38,6 +38,8 @@
     "cohere",
     "falcon",
     "gemma",
+    "gemma2",
+    "gemma3",
     "glm",
     "gpt2",
     "gpt_bigcode",
diff --git a/tests/exporters/onnx/utils_tests.py b/tests/exporters/onnx/utils_tests.py
index 705921d..d07a701 100644
--- a/tests/exporters/onnx/utils_tests.py
+++ b/tests/exporters/onnx/utils_tests.py
@@ -103,6 +103,7 @@
     "flaubert": "hf-internal-testing/tiny-random-flaubert",
     "gemma": "fxmarty/tiny-random-GemmaForCausalLM",
     "gemma2": "hf-internal-testing/tiny-random-Gemma2ForCausalLM",
+    "gemma3": "hf-internal-testing/tiny-random-Gemma3ForCausalLM",
     "glm": "hf-internal-testing/tiny-random-GlmForCausalLM",
     "glpn": "hf-internal-testing/tiny-random-GLPNModel",
     "gpt2": "hf-internal-testing/tiny-random-gpt2",
@@ -270,6 +271,7 @@
     "encoder-decoder": "patrickvonplaten/bert2bert_cnn_daily_mail",
     "flaubert": "flaubert/flaubert_small_cased",
     "gemma": "google/gemma-2b",
+    "gemma3": "google/gemma-2-2b",
     "gpt2": "gpt2",
     "gpt_neo": "EleutherAI/gpt-neo-125M",
     "gpt_neox": "EleutherAI/gpt-neox-20b",
diff --git a/tests/onnxruntime/test_decoder.py b/tests/onnxruntime/test_decoder.py
index 317085e..59cf216 100644
--- a/tests/onnxruntime/test_decoder.py
+++ b/tests/onnxruntime/test_decoder.py
@@ -33,6 +33,7 @@
     CohereOnnxConfig,
     DeepSeekV3OnnxConfig,
     Gemma2OnnxConfig,
+    Gemma3OnnxConfig,
     GemmaOnnxConfig,
     GLMOnnxConfig,
     GPTOssOnnxConfig,
@@ -118,6 +119,8 @@ class ORTModelForCausalLMIntegrationTest(ORTModelTestMixin):
         SUPPORTED_ARCHITECTURES.append("gemma")
     if is_transformers_version(">=", str(Gemma2OnnxConfig.MIN_TRANSFORMERS_VERSION)):
         SUPPORTED_ARCHITECTURES.append("gemma2")
+    if is_transformers_version(">=", str(Gemma3OnnxConfig.MIN_TRANSFORMERS_VERSION)):
+        SUPPORTED_ARCHITECTURES.append("gemma3")
     if is_transformers_version(">=", str(GLMOnnxConfig.MIN_TRANSFORMERS_VERSION)):
         SUPPORTED_ARCHITECTURES.append("glm")
     if is_transformers_version(">=", str(MPTOnnxConfig.MIN_TRANSFORMERS_VERSION)):
diff --git a/tests/onnxruntime/testing_utils.py b/tests/onnxruntime/testing_utils.py
index e0b2577..1fd3842 100644
--- a/tests/onnxruntime/testing_utils.py
+++ b/tests/onnxruntime/testing_utils.py
@@ -66,6 +66,7 @@
     "flux": "optimum-internal-testing/tiny-random-flux",
     "gemma": "fxmarty/tiny-random-GemmaForCausalLM",
     "gemma2": "hf-internal-testing/tiny-random-Gemma2ForCausalLM",
+    "gemma3": "hf-internal-testing/tiny-random-Gemma3ForCausalLM",
     "glm": "hf-internal-testing/tiny-random-GlmForCausalLM",
     "gpt2": "hf-internal-testing/tiny-random-GPT2LMHeadModel",
     "gpt_bigcode": "hf-internal-testing/tiny-random-GPTBigCodeModel",