diff --git a/images/constants.yml b/images/constants.yml
index aff8c75277..6d3fbd3825 100644
--- a/images/constants.yml
+++ b/images/constants.yml
@@ -17,6 +17,7 @@ variables:
   python312osFlavors: bullseye,bookworm
   python313osFlavors: bullseye,bookworm
   python314osFlavors: noble
+  python315osFlavors: noble
   dotnet80osFlavors: bullseye,bookworm
   dotnet90osFlavors: bookworm
   dotnet100osFlavors: noble
@@ -47,6 +48,8 @@ variables:
   python311_GPG_keys: A035C8C19219BA821ECEA86B64E628F8D684696D
   python312_GPG_keys: 7169605F62C751356D054A26A821E680E5FA6305
   python313_GPG_keys: 7169605F62C751356D054A26A821E680E5FA6305
+  python314_GPG_keys: 7169605F62C751356D054A26A821E680E5FA6305
+  python315_GPG_keys: 7169605F62C751356D054A26A821E680E5FA6305
   python39_GPG_keys: E3FF2839C048B25C084DEBE9B26995E310250568
   ASPNET_CORE_APP_80: 8.0.26
   ASPNET_CORE_APP_80_SHA: 2a5d39bfdb2d734fd765f806bf4be6138bc8d9b44f2f8aee3250ced56eaad4c0e4bf06141dec6ef2c6a46a8faf3d8ffd60b7361b687ff7d8b45179df35bb0149
@@ -81,4 +84,5 @@ variables:
   python311Version: 3.11.15
   python312Version: 3.12.13
   python313Version: 3.13.13
-  python314Version: 3.14.4
\ No newline at end of file
+  python314Version: 3.14.4
+  python315Version: 3.15.0b3
\ No newline at end of file
diff --git a/images/runtime/build_runtime_images.sh b/images/runtime/build_runtime_images.sh
index 51587e8bdc..2e0c1d3a42 100644
--- a/images/runtime/build_runtime_images.sh
+++ b/images/runtime/build_runtime_images.sh
@@ -156,6 +156,11 @@ case $stack_name in
             "3.14")
                 docker build -f ./images/runtime/python/template.Dockerfile -t python314_image_$os_flavor --build-arg PYTHON_FULL_VERSION=$python314Version --build-arg PYTHON_VERSION=3.14 --build-arg PYTHON_MAJOR_VERSION=3 --build-arg OS_FLAVOR=$os_flavor --build-arg BASE_IMAGE="docker.io/library/oryx_run_base_$os_flavor" --build-arg SDK_STORAGE_BASE_URL_VALUE=$SDK_STORAGE_BASE_URL_VALUE .
             ;;
+
+            "3.15")
+                # TODO: Update to ubuntu 26 when available.
+                docker build -f ./images/runtime/python/ubuntu-24.04-slim.Dockerfile -t python315_image_$os_flavor --build-arg PYTHON_FULL_VERSION=$python315Version --build-arg PYTHON_VERSION=3.15 --build-arg PYTHON_MAJOR_VERSION=3 --build-arg DEBIAN_FLAVOR=$os_flavor --build-arg BASE_IMAGE="mcr.microsoft.com/mirror/docker/library/ubuntu:24.04" --build-arg SDK_STORAGE_BASE_URL_VALUE=$SDK_STORAGE_BASE_URL_VALUE .
+            ;;
         esac
     ;;
 esac
diff --git a/images/runtime/python/cgmanifest.json b/images/runtime/python/cgmanifest.json
index b84ac0588e..889d9c7517 100644
--- a/images/runtime/python/cgmanifest.json
+++ b/images/runtime/python/cgmanifest.json
@@ -9,7 +9,8 @@
         },
         "Type": "pip"
       },
-      "DevelopmentDependency": false
+      "DevelopmentDependency": false,
+      "_comment": "Used by template.Dockerfile / noble.Dockerfile (3.9-3.14). Not installed in ubuntu-24.04-slim.Dockerfile (3.15+)."
     },
     {
       "Component": {
@@ -19,7 +20,8 @@
         },
         "Type": "pip"
       },
-      "DevelopmentDependency": false
+      "DevelopmentDependency": false,
+      "_comment": "Used by template.Dockerfile / noble.Dockerfile (3.9-3.14). Not installed in ubuntu-24.04-slim.Dockerfile (3.15+)."
     },
     {
       "Component": {
@@ -29,7 +31,9 @@
         },
         "Type": "pip"
       },
-      "DevelopmentDependency": false
+      "DevelopmentDependency": false,
+      "_comment": "Used by template.Dockerfile / noble.Dockerfile (3.9-3.14). Not installed in ubuntu-24.04-slim.Dockerfile (3.15+)."
     }
   ]
 }
+
diff --git a/images/runtime/python/install-dependencies-slim.sh b/images/runtime/python/install-dependencies-slim.sh
new file mode 100644
index 0000000000..93fe8f760f
--- /dev/null
+++ b/images/runtime/python/install-dependencies-slim.sh
@@ -0,0 +1,48 @@
+#!/bin/bash
+# --------------------------------------------------------------------------------------------
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT license.
+# --------------------------------------------------------------------------------------------
+
+set -ex
+
+# Core runtime libs + DB driver dev headers + tools
+apt-get update \
+    && apt-get upgrade -y \
+    && apt-get install -y --no-install-recommends \
+        ca-certificates \
+        curl \
+        wget \
+        less \
+        git \
+        gnupg \
+        libexpat1 \
+        libodbc2 \
+        libpq-dev \
+        default-libmysqlclient-dev
+
+# Microsoft ODBC Driver 18 for SQL Server (pyodbc target).
+# Uses the official packages.microsoft.com ubuntu/24.04 prod feed.
+# See https://docs.microsoft.com/en-us/sql/connect/odbc/linux-mac/installing-the-microsoft-odbc-driver-for-sql-server
+curl -fsSL https://packages.microsoft.com/keys/microsoft.asc \
+    | gpg --dearmor -o /usr/share/keyrings/microsoft-prod.gpg
+curl -fsSL https://packages.microsoft.com/config/ubuntu/24.04/prod.list \
+    > /etc/apt/sources.list.d/mssql-release.list
+
+apt-get update \
+    && ACCEPT_EULA=Y apt-get install -y --no-install-recommends msodbcsql18
+
+mkdir -p /etc/unixODBC
+cat >/etc/unixODBC/odbcinst.ini <<'EOL'
+[ODBC Driver 18 for SQL Server]
+Description=Microsoft ODBC Driver 18 for SQL Server
+Driver=/opt/microsoft/msodbcsql18/lib64/libmsodbcsql-18.1.so.1.1
+Threading=1
+UsageCount=1
+EOL
+
+# Remove gnupg — only needed to dearmor the key above.
+apt-get purge -y --auto-remove gnupg
+
+# Clean up — keep at the very end so every apt-get install above is included.
+rm -rf /var/lib/apt/lists/*
diff --git a/images/runtime/python/ubuntu-24.04-slim.Dockerfile b/images/runtime/python/ubuntu-24.04-slim.Dockerfile
new file mode 100644
index 0000000000..d9afd255f8
--- /dev/null
+++ b/images/runtime/python/ubuntu-24.04-slim.Dockerfile
@@ -0,0 +1,96 @@
+ARG DEBIAN_FLAVOR
+ARG BASE_IMAGE
+
+# Stage 1 — build the Oryx startup-script generator (the `oryx` CLI).
+FROM mcr.microsoft.com/oss/go/microsoft/golang:1.26.4-bookworm AS startupCmdGen
+WORKDIR /go/src
+COPY src/startupscriptgenerator/src .
+ARG GIT_COMMIT=unspecified
+ARG BUILD_NUMBER=unspecified
+ARG RELEASE_TAG_NAME=unspecified
+ENV RELEASE_TAG_NAME=${RELEASE_TAG_NAME}
+ENV GIT_COMMIT=${GIT_COMMIT}
+ENV BUILD_NUMBER=${BUILD_NUMBER}
+ENV PATH_CA_CERTIFICATE="/etc/ssl/certs/ca-certificate.crt"
+RUN chmod +x build.sh && ./build.sh python /opt/startupcmdgen/startupcmdgen
+
+
+# Stage 2 — compile CPython from source (PGO+LTO via prereqs/build.sh).
+FROM ${BASE_IMAGE} AS pythonSdkBuilder
+ARG DEBIAN_FLAVOR
+ARG PYTHON_FULL_VERSION
+ARG PYTHON_VERSION
+ENV PYTHON_VERSION=${PYTHON_FULL_VERSION}
+COPY platforms/python/prereqs/build.sh /tmp/build.sh
+COPY platforms/python/versions/${DEBIAN_FLAVOR}/versionsToBuild.txt /tmp/versionsToBuild.txt
+COPY images/receiveGpgKeys.sh /tmp/receiveGpgKeys.sh
+RUN chmod +x /tmp/build.sh /tmp/receiveGpgKeys.sh
+RUN set -e \
+    && mkdir -p /usr/src/python && cd /usr/src/python \
+    && VERSION_LINE=$(grep "^${PYTHON_VERSION}," /tmp/versionsToBuild.txt) \
+    && export GPG_KEY=$(echo "$VERSION_LINE" | cut -d',' -f2 | tr -d ' ') \
+    && export PYTHON_SHA256=$(echo "$VERSION_LINE" | cut -d',' -f3 | tr -d ' ') \
+    && export OS_FLAVOR=${DEBIAN_FLAVOR} \
+    && /tmp/build.sh
+
+
+# Stage 3 — final runtime image.
+FROM ${BASE_IMAGE} as main
+
+ARG SDK_STORAGE_BASE_URL_VALUE
+ARG DEBIAN_FLAVOR
+ENV DEBIAN_FLAVOR=${DEBIAN_FLAVOR}
+ENV ORYX_SDK_STORAGE_BASE_URL=${SDK_STORAGE_BASE_URL_VALUE}
+
+# Layer 1 — runtime apt deps (least volatile; bumped only on driver/SSL CVEs).
+# Targeted COPY of only the dep script — avoids invalidating this layer on
+# every unrelated change under images/.
+COPY images/runtime/python/install-dependencies-slim.sh /tmp/install-dependencies-slim.sh
+RUN chmod +x /tmp/install-dependencies-slim.sh \
+    && /tmp/install-dependencies-slim.sh \
+    && rm -f /tmp/install-dependencies-slim.sh
+
+# Layer 2 — extracted Python (changes every patch bump).
+ARG PYTHON_FULL_VERSION
+ARG PYTHON_VERSION
+ARG PYTHON_MAJOR_VERSION
+ENV PYTHON_VERSION=${PYTHON_FULL_VERSION}
+
+COPY --from=pythonSdkBuilder /opt/python/${PYTHON_FULL_VERSION} /opt/python/${PYTHON_FULL_VERSION}
+
+RUN set -ex \
+ && cd /opt/python/ \
+ && ln -s ${PYTHON_FULL_VERSION} ${PYTHON_VERSION} \
+ && ln -s ${PYTHON_VERSION} ${PYTHON_MAJOR_VERSION} \
+ && echo /opt/python/${PYTHON_MAJOR_VERSION}/lib >> /etc/ld.so.conf.d/python.conf \
+ && ldconfig \
+ && if [ "${PYTHON_MAJOR_VERSION}" = "3" ]; then cd /opt/python/${PYTHON_MAJOR_VERSION}/bin \
+ && ln -nsf idle3 idle \
+ && ln -nsf pydoc3 pydoc \
+ && ln -nsf python3-config python-config; fi \
+ && rm -rf /var/lib/apt/lists/*
+
+ENV PATH="/opt/python/${PYTHON_MAJOR_VERSION}/bin:${PATH}"
+
+# AI + cert envs.
+ARG AI_CONNECTION_STRING
+ENV ORYX_AI_CONNECTION_STRING=${AI_CONNECTION_STRING}
+ENV PATH_CA_CERTIFICATE="/etc/ssl/certs/ca-certificate.crt"
+
+# Buildpacks contract.
+ENV CNB_STACK_ID="oryx.stacks.skeleton"
+LABEL io.buildpacks.stack.id="oryx.stacks.skeleton"
+
+# Layer 3 — pip toolchain (gunicorn only; rebuilt on pip bumps).
+RUN --mount=type=secret,id=pip_index_url,target=/run/secrets/pip_index_url \
+    pip install --index-url $(cat /run/secrets/pip_index_url) --upgrade pip && \
+    pip install --index-url $(cat /run/secrets/pip_index_url) gunicorn
+
+# C.UTF-8 is provided by libc — no `locales` package install required.
+ENV LANG="C.UTF-8" \
+    LANGUAGE="C.UTF-8" \
+    LC_ALL="C.UTF-8"
+
+# Layer 4 — oryx CLI (per-build, tiny — last for max cache hit on rebuilds).
+COPY --from=startupCmdGen /opt/startupcmdgen/startupcmdgen /opt/startupcmdgen/startupcmdgen
+RUN ln -s /opt/startupcmdgen/startupcmdgen /usr/local/bin/oryx
diff --git a/platforms/python/versions/noble/versionsToBuild.txt b/platforms/python/versions/noble/versionsToBuild.txt
index 45a8bb4b5c..332e7756db 100644
--- a/platforms/python/versions/noble/versionsToBuild.txt
+++ b/platforms/python/versions/noble/versionsToBuild.txt
@@ -2,3 +2,4 @@
 # version, gpg keys, SHA256
 3.14.2,,CE543AB854BC256B61B71E9B27F831FFD1BFD60A479D639F8BE7F9757CF573E9,
 3.14.4,,D923C51303E38E249136FC1BDF3568D56ECB03214EFDEF48516176D3D7FAAEF8,
+3.15.0b3,7169605F62C751356D054A26A821E680E5FA6305,e5a18806817f912f2c9a1091ac77703f9a969b129c878d436f0f7025bf2f9e97,
diff --git a/src/BuildScriptGenerator/PythonVersions.cs b/src/BuildScriptGenerator/PythonVersions.cs
index 7e39133e20..f557d2ba18 100644
--- a/src/BuildScriptGenerator/PythonVersions.cs
+++ b/src/BuildScriptGenerator/PythonVersions.cs
@@ -31,5 +31,7 @@ public static class PythonVersions
         public static string Python313Version => ConstantsYamlReader.Get("python313Version");
 
         public static string Python314Version => ConstantsYamlReader.TryGet("python314Version");
+
+        public static string Python315Version => ConstantsYamlReader.TryGet("python315Version");
     }
 }
\ No newline at end of file