Richard John Keogh is a professional footballer who plays as a defender for and Captains Football League Championship club Derby County and the Republic of Ireland national football team. He plays primarily as a centre-half but can also play at right-back.

Keogh began his career as a trainee at Ipswich Town and Stoke City, making his professional début on loan from the latter at Icelandic club Víkingur in 2004. He joined Bristol City on a free transfer in 2005 and made his Football League debut in September of that year. He made several more appearances that season before spending a month on loan at Wycombe Wanderers, then going on to appear sporadically for Bristol City at the end of the season, scoring his first goal in April 2006. Keogh was a regular in the first team the following season, playing 43 times in all competitions and scoring 4 goals. However, he found himself out of favour in the 2007–08 season, spending time out on loan at Huddersfield Town, Carlisle United and Cheltenham Town. At the end of the season, he joined Carlisle United for an undisclosed fee.

Keogh was a first-team regular for Carlisle, playing 82 times in all competitions over two seasons and scoring 6 goals. He also won the club's Player of the Year Award for the 2009–10 season. At the end of the season, he joined Coventry City on a free transfer and was again a near-ever present, playing 95 league and cup matches across two seasons, scoring one goal. Keogh was named the Player of the Year for the 2011–12 season, although the club was relegated from the Championship However, he remained in the league, signing for Derby County for a fee of over £1 million. He has played over 190 matches for the club, scored 7 goals, won the club's Player of the Year Award for the 2012–13 and 2015–16 seasons and was named in the 2014–15 PFA Team of the Year.

Although Keogh was born in Essex, he has represented the Republic of Ireland at under-19, under-21 and senior level. As of March 2016, he has won 11 caps and scored once.