diff --git a/__tests__/components/FlowRunDialog.test.tsx b/__tests__/components/FlowRunDialog.test.tsx
new file mode 100644
index 0000000..3658c67
--- /dev/null
+++ b/__tests__/components/FlowRunDialog.test.tsx
@@ -0,0 +1,65 @@
+/**
+ * Tests for FlowRunDialog — collects an input-driven flow's variables and hands
+ * them back as a params object when Run is pressed.
+ */
+import React from "react";
+import { render, fireEvent } from "@testing-library/react-native";
+
+jest.mock("react-i18next", () => ({
+  // lib/i18n calls i18n.use(initReactI18next) on import.
+  initReactI18next: { type: "3rdParty", init: () => {} },
+  useTranslation: () => ({
+    t: (k: string) =>
+      k === "workflow.runLabel"
+        ? "Run"
+        : k === "common.cancel"
+          ? "Cancel"
+          : k === "workflow.runFlow"
+            ? "Run Flow"
+            : k,
+  }),
+}));
+
+import { FlowRunDialog } from "~/components/automation/FlowRunDialog";
+
+const inputs = [
+  { name: "leadId", type: "text", isInput: true },
+  { name: "opportunityName", type: "text", isInput: true },
+];
+
+describe("FlowRunDialog", () => {
+  it("renders a field per input and a Run/Cancel pair", () => {
+    const { getByText } = render(
+      <FlowRunDialog
+        open
+        flowLabel="Lead Conversion"
+        inputs={inputs}
+        onCancel={jest.fn()}
+        onRun={jest.fn()}
+      />,
+    );
+    expect(getByText("Lead Id")).toBeTruthy();
+    expect(getByText("Opportunity Name")).toBeTruthy();
+    expect(getByText("Run")).toBeTruthy();
+    expect(getByText("Cancel")).toBeTruthy();
+  });
+
+  it("calls onRun with a params object keyed by variable name", () => {
+    const onRun = jest.fn();
+    const { getByText } = render(
+      <FlowRunDialog open flowLabel="f" inputs={inputs} onCancel={jest.fn()} onRun={onRun} />,
+    );
+    fireEvent.press(getByText("Run"));
+    expect(onRun).toHaveBeenCalledTimes(1);
+    expect(Object.keys(onRun.mock.calls[0][0]).sort()).toEqual(["leadId", "opportunityName"]);
+  });
+
+  it("calls onCancel from the Cancel button", () => {
+    const onCancel = jest.fn();
+    const { getByText } = render(
+      <FlowRunDialog open flowLabel="f" inputs={inputs} onCancel={onCancel} onRun={jest.fn()} />,
+    );
+    fireEvent.press(getByText("Cancel"));
+    expect(onCancel).toHaveBeenCalled();
+  });
+});
diff --git a/app/flows/[name]/index.tsx b/app/flows/[name]/index.tsx
index 19cf79c..1a5e920 100644
--- a/app/flows/[name]/index.tsx
+++ b/app/flows/[name]/index.tsx
@@ -9,8 +9,10 @@ import { EmptyState } from "~/components/ui/EmptyState";
 import { ListSkeleton } from "~/components/ui/ListSkeleton";
 import { useToast } from "~/components/ui/Toast";
 import { useConfirm } from "~/components/ui/ConfirmDialog";
+import { useState } from "react";
 import { FlowViewer } from "~/components/automation/FlowViewer";
 import { FlowRunList } from "~/components/automation/FlowRunList";
+import { FlowRunDialog } from "~/components/automation/FlowRunDialog";
 import { useFlow } from "~/hooks/useFlows";
 import { useFlowRuns, useTriggerFlow } from "~/hooks/useFlowRuns";
 
@@ -35,21 +37,32 @@ export default function FlowDetailScreen() {
   const { trigger, isTriggering } = useTriggerFlow();
 
   const runs = runsData?.runs ?? [];
+  const [runDialogOpen, setRunDialogOpen] = useState(false);
+
+  const runFlow = async (params?: Record<string, unknown>) => {
+    if (!flow) return;
+    const result = await trigger(flow.name, params ? { params } : undefined);
+    if (result.ok) {
+      toastSuccess(t("workflow.runStarted"));
+    } else {
+      toastError(result.error ?? t("workflow.runFailed"));
+    }
+  };
 
   const handleRun = async () => {
     if (!flow) return;
+    // Input-driven flows collect their variables first; field-less flows just
+    // confirm and run.
+    if (flow.variables.some((v) => v.isInput)) {
+      setRunDialogOpen(true);
+      return;
+    }
     const ok = await confirm({
       title: t("workflow.runFlow"),
       message: t("workflow.runConfirm", { flow: flow.label }),
       confirmLabel: t("workflow.runLabel"),
     });
-    if (!ok) return;
-    const result = await trigger(flow.name);
-    if (result.ok) {
-      toastSuccess(t("workflow.runStarted"));
-    } else {
-      toastError(result.error ?? t("workflow.runFailed"));
-    }
+    if (ok) await runFlow();
   };
 
   if (isLoading) {
@@ -149,6 +162,18 @@ export default function FlowDetailScreen() {
           )}
         </View>
       </ScrollView>
+
+      <FlowRunDialog
+        open={runDialogOpen}
+        flowLabel={flow.label}
+        inputs={inputs}
+        isRunning={isTriggering}
+        onCancel={() => setRunDialogOpen(false)}
+        onRun={async (params) => {
+          setRunDialogOpen(false);
+          await runFlow(params);
+        }}
+      />
     </SafeAreaView>
   );
 }
diff --git a/components/automation/FlowRunDialog.tsx b/components/automation/FlowRunDialog.tsx
new file mode 100644
index 0000000..1ab4bc6
--- /dev/null
+++ b/components/automation/FlowRunDialog.tsx
@@ -0,0 +1,105 @@
+import React from "react";
+import { View, Text, ScrollView } from "react-native";
+import { useTranslation } from "react-i18next";
+import { Dialog } from "~/components/ui/Dialog";
+import { Button } from "~/components/ui/Button";
+import { FieldRenderer } from "~/components/renderers/fields/FieldRenderer";
+import type { FieldDefinition } from "~/components/renderers";
+import type { FlowVariable } from "~/hooks/useFlows";
+
+export interface FlowRunDialogProps {
+  open: boolean;
+  flowLabel: string;
+  /** The flow's input variables to collect before running. */
+  inputs: FlowVariable[];
+  isRunning?: boolean;
+  onCancel: () => void;
+  /** Run with the collected `{ varName: value }` params. */
+  onRun: (params: Record<string, unknown>) => void;
+}
+
+function humanize(token: string): string {
+  // Flow variables are camelCase (e.g. `opportunityName`); split those too.
+  return token
+    .replace(/([a-z0-9])([A-Z])/g, "$1 $2")
+    .replace(/_/g, " ")
+    .replace(/\b\w/g, (c) => c.toUpperCase());
+}
+
+/** Coerce a date/datetime field value (epoch-ms or Date) to ISO-8601. */
+function normalizeValue(type: string | undefined, value: unknown): unknown {
+  if (value == null || value === "") return value;
+  if (type === "date" || type === "datetime") {
+    const d =
+      value instanceof Date
+        ? value
+        : typeof value === "number" || /^\d+$/.test(String(value).trim())
+          ? new Date(Number(value))
+          : null;
+    if (d && !isNaN(d.getTime())) return d.toISOString();
+  }
+  return value;
+}
+
+/**
+ * Collects an input-driven flow's variables before triggering it. Rendered only
+ * when the flow declares `isInput` variables; field-less flows run straight from
+ * the simple confirm dialog instead.
+ */
+export function FlowRunDialog({
+  open,
+  flowLabel,
+  inputs,
+  isRunning = false,
+  onCancel,
+  onRun,
+}: FlowRunDialogProps) {
+  const { t } = useTranslation();
+  const [values, setValues] = React.useState<Record<string, unknown>>({});
+
+  // Reset collected values whenever the dialog (re)opens.
+  React.useEffect(() => {
+    if (open) setValues({});
+  }, [open]);
+
+  const handleRun = () => {
+    const params: Record<string, unknown> = {};
+    for (const v of inputs) {
+      params[v.name] = normalizeValue(v.type, values[v.name]);
+    }
+    onRun(params);
+  };
+
+  return (
+    <Dialog open={open} onOpenChange={(o) => (!o ? onCancel() : undefined)} title={t("workflow.runFlow")}>
+      <Text className="mb-3 text-sm text-muted-foreground">{flowLabel}</Text>
+      <ScrollView className="max-h-80" keyboardShouldPersistTaps="handled">
+        <View className="gap-4">
+          {inputs.map((v) => {
+            const field: FieldDefinition = {
+              name: v.name,
+              label: humanize(v.name),
+              type: (v.type ?? "text") as FieldDefinition["type"],
+            };
+            return (
+              <FieldRenderer
+                key={v.name}
+                field={field}
+                value={values[v.name]}
+                onChange={(val) => setValues((prev) => ({ ...prev, [v.name]: val }))}
+              />
+            );
+          })}
+        </View>
+      </ScrollView>
+      <View className="mt-4 flex-row justify-end gap-3">
+        <Button variant="outline" onPress={onCancel} disabled={isRunning} className="flex-1">
+          {t("common.cancel")}
+        </Button>
+        <Button onPress={handleRun} loading={isRunning} className="flex-1">
+          {t("workflow.runLabel")}
+        </Button>
+      </View>
+    </Dialog>
+  );
+}