diff --git a/apps/web/src/views/card/components/AttachmentUpload.tsx b/apps/web/src/views/card/components/AttachmentUpload.tsx
new file mode 100644
index 00000000..ac76a81e
--- /dev/null
+++ b/apps/web/src/views/card/components/AttachmentUpload.tsx
@@ -0,0 +1,113 @@
+import { t } from "@lingui/core/macro";
+import { useRef, useState } from "react";
+import { HiOutlinePaperClip } from "react-icons/hi";
+
+import Button from "~/components/Button";
+import { usePopup } from "~/providers/popup";
+import { api } from "~/utils/api";
+
+export function AttachmentUpload({ cardPublicId }: { cardPublicId: string }) {
+  const { showPopup } = usePopup();
+  const utils = api.useUtils();
+  const [uploading, setUploading] = useState(false);
+  const inputRef = useRef<HTMLInputElement | null>(null);
+
+  const generateUploadUrl = api.attachment.generateUploadUrl.useMutation();
+  const confirmAttachment = api.attachment.confirm.useMutation({
+    onSuccess: async () => {
+      await utils.card.byId.invalidate({ cardPublicId });
+      showPopup({
+        header: t`Attachment uploaded`,
+        message: t`Your file has been uploaded successfully.`,
+        icon: "success",
+      });
+    },
+    onError: () => {
+      showPopup({
+        header: t`Upload failed`,
+        message: t`Failed to upload attachment. Please try again.`,
+        icon: "error",
+      });
+    },
+    onSettled: () => {
+      setUploading(false);
+    },
+  });
+
+  const handleFileSelect = async (
+    event: React.ChangeEvent<HTMLInputElement>,
+  ) => {
+    const file = event.target.files?.[0];
+    if (!file) return;
+
+    // Reset input
+    event.target.value = "";
+
+    setUploading(true);
+
+    try {
+      // Generate presigned URL
+      const { url, key } = await generateUploadUrl.mutateAsync({
+        cardPublicId,
+        filename: file.name,
+        contentType: file.type,
+        size: file.size,
+      });
+
+      // Upload file to S3
+      const uploadResponse = await fetch(url, {
+        method: "PUT",
+        body: file,
+        headers: {
+          "Content-Type": file.type,
+        },
+      });
+
+      if (!uploadResponse.ok) {
+        throw new Error("Upload failed");
+      }
+
+      // Confirm attachment in database
+      await confirmAttachment.mutateAsync({
+        cardPublicId,
+        s3Key: key,
+        filename: file.name,
+        originalFilename: file.name,
+        contentType: file.type,
+        size: file.size,
+      });
+    } catch {
+      showPopup({
+        header: t`Upload failed`,
+        message: t`Failed to upload attachment. Please try again.`,
+        icon: "error",
+      });
+      setUploading(false);
+    }
+  };
+
+  return (
+    <div className="mb-6">
+      <input
+        ref={inputRef}
+        type="file"
+        id="attachment-upload"
+        className="hidden"
+        onChange={handleFileSelect}
+        disabled={uploading}
+      />
+      <div>
+        <Button
+          type="button"
+          variant="ghost"
+          iconLeft={<HiOutlinePaperClip className="h-4 w-4" />}
+          isLoading={uploading}
+          disabled={uploading}
+          iconOnly
+          size="sm"
+          onClick={() => inputRef.current?.click()}
+        />
+      </div>
+    </div>
+  );
+}
diff --git a/apps/web/src/views/card/index.tsx b/apps/web/src/views/card/index.tsx
index a5809ce1..eecb88ff 100644
--- a/apps/web/src/views/card/index.tsx
+++ b/apps/web/src/views/card/index.tsx
@@ -20,6 +20,7 @@ import { api } from "~/utils/api";
 import { formatMemberDisplayName, getAvatarUrl } from "~/utils/helpers";
 import { DeleteLabelConfirmation } from "../../components/DeleteLabelConfirmation";
 import ActivityList from "./components/ActivityList";
+import { AttachmentUpload } from "./components/AttachmentUpload";
 import Checklists from "./components/Checklists";
 import { DeleteCardConfirmation } from "./components/DeleteCardConfirmation";
 import { DeleteChecklistConfirmation } from "./components/DeleteChecklistConfirmation";
@@ -286,6 +287,11 @@ export default function CardPage({ isTemplate }: { isTemplate?: boolean }) {
                     activeChecklistForm={activeChecklistForm}
                     setActiveChecklistForm={setActiveChecklistForm}
                   />
+                  {!isTemplate && (
+                    <div className="mt-6">
+                      <AttachmentUpload cardPublicId={cardId ?? ""} />
+                    </div>
+                  )}
                   <div className="border-t-[1px] border-light-300 pt-12 dark:border-dark-300">
                     <h2 className="text-md pb-4 font-medium text-light-1000 dark:text-dark-1000">
                       {t`Activity`}