:Tennis at the 2004 Summer Olympics

{{Use dmy dates|date=March 2025}}

{{Infobox tennis tournament year|2004|Summer Olympics|

| logo = File:Tennis, Athens 2004.png

| logo_size = 150px

| date = 15–22 August 2004

| edition = 14

| category =

| surface = Hard (DecoTurf)

| multi = yes

| quadrennial = yes

| location = Athens Olympic Tennis Centre, Athens

| champms = {{flagIOCmedalist|Nicolás Massú|CHI|2004 Summer}}

| champws = {{flagIOCmedalist|Justine Henin|BEL|2004 Summer}}

| champmd = {{flagIOCmedalist|Fernando González / Nicolás Massú|CHI|2004 Summer}}

| champwd = {{flagIOCmedalist|Li Ting / Sun Tiantian|CHN|2004 Summer}}

}}

Tennis at the 2004 Summer Olympics in Athens took place on ten separate courts at the Olympic Tennis Centre. The surface was hardcourt.

172 players competed in four events. 2004 saw more of the top ranked players appearing, as this tournament saw world ranking points allocated to the players for the first time. Martina Navratilova made her first appearance at the Olympic Games where she partnered with Lisa Raymond in the ladies doubles.

Chile finished on top of the medal table with its first two Olympic gold medals in history, as Nicolás Massú won both the men's singles and doubles with Fernando González. They saved 4 consecutive championship points en route to the title in the 4th set tiebreak of the final. González also won a bronze medal in the men's singles competition. In the women's events, Justine Henin from Belgium secured the women's singles title while Chinese pair, Li Ting and Sun Tiantian took the women's doubles.