diff --git a/projects/r/Dockerfile b/projects/r/Dockerfile
new file mode 100644
index 000000000000..81b187a4a6b0
--- /dev/null
+++ b/projects/r/Dockerfile
@@ -0,0 +1,38 @@
+# Copyright 2026 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+################################################################################
+
+FROM gcr.io/oss-fuzz-base/base-builder
+
+RUN apt-get update && apt-get install -y \
+    gfortran \
+    libbz2-dev \
+    libcurl4-openssl-dev \
+    liblzma-dev \
+    libpcre2-dev \
+    libreadline-dev \
+    subversion \
+    texinfo \
+    zlib1g-dev
+
+# R source: the canonical upstream is SVN trunk.
+RUN svn checkout --depth=infinity https://svn.r-project.org/R/trunk $SRC/r-source
+
+# Fuzz harnesses and build logic are maintained separately by R-devel, so
+# they can be updated without a google/oss-fuzz PR.
+RUN git clone --depth 1 https://github.com/r-devel/r-oss-fuzz.git $SRC/r-oss-fuzz
+
+COPY build.sh $SRC/
+WORKDIR $SRC/r-source
diff --git a/projects/r/build.sh b/projects/r/build.sh
new file mode 100644
index 000000000000..79f0e5787648
--- /dev/null
+++ b/projects/r/build.sh
@@ -0,0 +1,21 @@
+#!/bin/bash -eu
+# Copyright 2026 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+################################################################################
+
+# The R fuzz targets and their build logic are maintained in a separate
+# repository (https://github.com/r-devel/r-oss-fuzz), cloned into
+# $SRC/r-oss-fuzz by the Dockerfile. Delegate the build to it.
+exec "$SRC/r-oss-fuzz/ossfuzz.sh"
diff --git a/projects/r/project.yaml b/projects/r/project.yaml
new file mode 100644
index 000000000000..8f6e7a167f2e
--- /dev/null
+++ b/projects/r/project.yaml
@@ -0,0 +1,12 @@
+homepage: "https://www.r-project.org/"
+language: c
+primary_contact: "simon.urbanek@r-project.org"
+auto_ccs:
+  - "r-oss-fuzz@R-project.org"
+  - "kevin@posit.co"
+main_repo: "https://svn.r-project.org/R/trunk"
+sanitizers:
+  - address
+fuzzing_engines:
+  - libfuzzer
+  - afl