diff --git a/lib/components/document/src/Cell.ts b/lib/components/document/src/Cell.ts
index 0911154..4af08f0 100644
--- a/lib/components/document/src/Cell.ts
+++ b/lib/components/document/src/Cell.ts
@@ -266,6 +266,20 @@ export class Cell extends Component<CellProps, CellChild> {
 						"insideH": docxml:ct-border(${QNS.w}insideH),
 						"insideV": docxml:ct-border(${QNS.w}insideV)
 					},
+					"margin": ./${QNS.w}tcPr/${QNS.w}tcMar/map {
+						"top": if (${QNS.w}top/@${QNS.w}w)
+							then docxml:length(${QNS.w}top/@${QNS.w}w, 'twip')
+							else (),
+						"start": if ((${QNS.w}start|${QNS.w}left)/@${QNS.w}w)
+							then docxml:length((${QNS.w}start|${QNS.w}left)[1]/@${QNS.w}w, 'twip')
+							else (),
+						"bottom": if (${QNS.w}bottom/@${QNS.w}w)
+							then docxml:length(${QNS.w}bottom/@${QNS.w}w, 'twip')
+							else (),
+						"end": if ((${QNS.w}end|${QNS.w}right)/@${QNS.w}w)
+							then docxml:length((${QNS.w}end|${QNS.w}right)[1]/@${QNS.w}w, 'twip')
+							else ()
+					},
 					"verticalAlignment": ./${QNS.w}tcPr/${QNS.w}vAlign/@${QNS.w}val/string(),
 					"insertion": ./${QNS.w}tcPr/${QNS.w}cellIns/map {
 						"id": @${QNS.w}id/number(),
diff --git a/lib/components/document/test/Cell.test.ts b/lib/components/document/test/Cell.test.ts
index 1a1b79b..f4bb88d 100644
--- a/lib/components/document/test/Cell.test.ts
+++ b/lib/components/document/test/Cell.test.ts
@@ -86,6 +86,59 @@ describe('Cell', () => {
 	});
 });
 
+describe('Cell - tcMar (per-cell margins)', () => {
+	const dom = create(`<w:tbl xmlns:w="${NamespaceUri.w}">
+		<w:tr>
+			<w:tc xid="modern">
+				<w:tcPr>
+					<w:tcMar>
+						<w:top w:w="28" w:type="dxa"/>
+						<w:start w:w="14" w:type="dxa"/>
+						<w:bottom w:w="28" w:type="dxa"/>
+						<w:end w:w="14" w:type="dxa"/>
+					</w:tcMar>
+				</w:tcPr>
+				<w:p/>
+			</w:tc>
+			<w:tc xid="legacy">
+				<w:tcPr>
+					<w:tcMar>
+						<w:left w:w="14" w:type="dxa"/>
+						<w:right w:w="14" w:type="dxa"/>
+					</w:tcMar>
+				</w:tcPr>
+				<w:p/>
+			</w:tc>
+		</w:tr>
+	</w:tbl>`);
+
+	describe('modern start/end', () => {
+		const cell = Cell.fromNode(
+			// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+			evaluateXPathToFirstNode('.//*[@xid="modern"]', dom)!,
+			emptyContext
+		);
+		it('parses all four sides', () => {
+			expect(cell?.props.margin?.top?.twip).toBe(28);
+			expect(cell?.props.margin?.start?.twip).toBe(14);
+			expect(cell?.props.margin?.bottom?.twip).toBe(28);
+			expect(cell?.props.margin?.end?.twip).toBe(14);
+		});
+	});
+
+	describe('legacy left/right', () => {
+		const cell = Cell.fromNode(
+			// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+			evaluateXPathToFirstNode('.//*[@xid="legacy"]', dom)!,
+			emptyContext
+		);
+		it('maps left/right onto start/end', () => {
+			expect(cell?.props.margin?.start?.twip).toBe(14);
+			expect(cell?.props.margin?.end?.twip).toBe(14);
+		});
+	});
+});
+
 describe('Cell - with colspan', () => {
 	const tableNode = create(`
 		<w:tbl xmlns:w="${NamespaceUri.w}">
diff --git a/lib/properties/src/table-cell-properties.ts b/lib/properties/src/table-cell-properties.ts
index 7f22228..3cceb27 100644
--- a/lib/properties/src/table-cell-properties.ts
+++ b/lib/properties/src/table-cell-properties.ts
@@ -45,6 +45,26 @@ export type TableCellProperties = {
 		 */
 		tr2bl?: null | Border<LineBorderType>;
 	};
+	/**
+	 * The margins (internal padding) of this cell, overriding the table-level
+	 * default cell margins (`w:tblCellMar`). Corresponds to `w:tcMar` in OOXML.
+	 *
+	 * Each side is a {@link Length}. Omitted sides fall back to the table default.
+	 */
+	margin?: null | {
+		top?: null | Length;
+		/**
+		 * The leading (left, in left-to-right) margin. Serialized as `w:start`;
+		 * both `w:start` and the legacy `w:left` are accepted when reading.
+		 */
+		start?: null | Length;
+		bottom?: null | Length;
+		/**
+		 * The trailing (right, in left-to-right) margin. Serialized as `w:end`;
+		 * both `w:end` and the legacy `w:right` are accepted when reading.
+		 */
+		end?: null | Length;
+	};
 	/**
 	 * The vertical alignment of this cell.
 	 */
@@ -127,6 +147,20 @@ export function tableCellPropertiesFromNode(
 						"insideH": docxml:ct-border(${QNS.w}insideH),
 						"insideV": docxml:ct-border(${QNS.w}insideV)
 					},
+					"margin": ./${QNS.w}tcMar/map {
+						"top": if (${QNS.w}top/@${QNS.w}w)
+							then docxml:length(${QNS.w}top/@${QNS.w}w, 'twip')
+							else (),
+						"start": if ((${QNS.w}start|${QNS.w}left)/@${QNS.w}w)
+							then docxml:length((${QNS.w}start|${QNS.w}left)[1]/@${QNS.w}w, 'twip')
+							else (),
+						"bottom": if (${QNS.w}bottom/@${QNS.w}w)
+							then docxml:length(${QNS.w}bottom/@${QNS.w}w, 'twip')
+							else (),
+						"end": if ((${QNS.w}end|${QNS.w}right)/@${QNS.w}w)
+							then docxml:length((${QNS.w}end|${QNS.w}right)[1]/@${QNS.w}w, 'twip')
+							else ()
+					},
 					"verticalAlignment": ./${QNS.w}vAlign/@${QNS.w}val/string(),
 					"insertion": ./${QNS.w}cellIns/map {
 						"id": @${QNS.w}id/number(), 
@@ -147,7 +181,7 @@ export function tableCellPropertiesFromNode(
 				}
 				`,
 				node
-		  )
+			)
 		: {};
 
 	if (props.change) {
@@ -218,6 +252,24 @@ export function tableCellPropertiesToNode(
 				docxml:ct-border(fn:QName("${NamespaceUri.w}", "insideH"), $borders('insideH')),
 				docxml:ct-border(fn:QName("${NamespaceUri.w}", "insideV"), $borders('insideV'))
 			} else (),
+			if (exists($margin)) then element ${QNS.w}tcMar {
+				if (exists($margin('top'))) then element ${QNS.w}top {
+					attribute ${QNS.w}w { $margin('top') },
+					attribute ${QNS.w}type { "dxa" }
+				} else (),
+				if (exists($margin('start'))) then element ${QNS.w}start {
+					attribute ${QNS.w}w { $margin('start') },
+					attribute ${QNS.w}type { "dxa" }
+				} else (),
+				if (exists($margin('bottom'))) then element ${QNS.w}bottom {
+					attribute ${QNS.w}w { $margin('bottom') },
+					attribute ${QNS.w}type { "dxa" }
+				} else (),
+				if (exists($margin('end'))) then element ${QNS.w}end {
+					attribute ${QNS.w}w { $margin('end') },
+					attribute ${QNS.w}type { "dxa" }
+				} else ()
+			} else (),
 			if (exists($verticalAlignment)) then element ${QNS.w}vAlign {
 				attribute ${QNS.w}val { $verticalAlignment }
 			} else (),
@@ -247,8 +299,29 @@ export function tableCellPropertiesToNode(
 						tl2br: null,
 						tr2bl: null,
 						...tcpr.borders,
-				  }
+					}
 				: null,
+			margin:
+				tcpr.margin &&
+				(tcpr.margin.top ||
+					tcpr.margin.start ||
+					tcpr.margin.bottom ||
+					tcpr.margin.end)
+					? {
+							top: tcpr.margin.top
+								? Math.round(tcpr.margin.top.twip)
+								: null,
+							start: tcpr.margin.start
+								? Math.round(tcpr.margin.start.twip)
+								: null,
+							bottom: tcpr.margin.bottom
+								? Math.round(tcpr.margin.bottom.twip)
+								: null,
+							end: tcpr.margin.end
+								? Math.round(tcpr.margin.end.twip)
+								: null,
+						}
+					: null,
 			verticalAlignment: tcpr.verticalAlignment || null,
 			change: tcpr.change
 				? {
@@ -260,7 +333,7 @@ export function tableCellPropertiesToNode(
 							? new Date(tcpr.change.date).toISOString()
 							: undefined,
 						node: tableCellPropertiesToNode(tcpr.change, true),
-				  }
+					}
 				: null,
 			insertion: tcpr.insertion
 				? new CellInsertion(tcpr.insertion).toNode()
diff --git a/lib/properties/test/table-cell-properties.test.ts b/lib/properties/test/table-cell-properties.test.ts
index 1e9aada..c6b7360 100644
--- a/lib/properties/test/table-cell-properties.test.ts
+++ b/lib/properties/test/table-cell-properties.test.ts
@@ -199,6 +199,46 @@ describe('Table cell formatting', () => {
 		});
 	});
 
+	describe('Table cell margins (w:tcMar)', () => {
+		test(
+			`<w:tcPr ${ALL_NAMESPACE_DECLARATIONS}>
+				<w:tcMar>
+					<w:top w:w="28" w:type="dxa"/>
+					<w:start w:w="14" w:type="dxa"/>
+					<w:bottom w:w="28" w:type="dxa"/>
+					<w:end w:w="14" w:type="dxa"/>
+				</w:tcMar>
+			</w:tcPr>`,
+			{
+				margin: {
+					top: twip(28),
+					start: twip(14),
+					bottom: twip(28),
+					end: twip(14),
+				},
+			}
+		);
+
+		describe('Legacy "left"/"right"', () => {
+			test(
+				`<w:tcPr ${ALL_NAMESPACE_DECLARATIONS}>
+					<w:tcMar>
+						<w:left w:w="14" w:type="dxa"/>
+						<w:right w:w="14" w:type="dxa"/>
+					</w:tcMar>
+				</w:tcPr>`,
+				{
+					margin: {
+						top: null,
+						start: twip(14),
+						bottom: null,
+						end: twip(14),
+					},
+				}
+			);
+		});
+	});
+
 	describe('Table cell insertion', () => {
 		const date = new Date();
 		test(