Season 2 of Codename: Kids Next Door premiered on October 3, 2003 on Cartoon Network in the United States and ended on June 4, 2004.
Season 2 has thirteen episodes total. Twelve of these have two eleven-minute episodes, and the season finale is one twenty-two minute long episode.
This season begins to explore into the global operations of the KND.
Episodes[]
| E# | Code | Mission A | Mission B | Original Airdate |
| 14 | 201 | Operation: C.A.T.S. | Operation: P.O.P. | October 3, 2003 |
| 15 | 202 | Operation: S.P.A.N.K. | Operation: D.A.T.E. | October 10, 2003 |
| 16 | 203 | Operation: S.U.P.P.O.R.T. | Operation: T.A.P.I.O.C.A. | October 17, 2003 |
| 17 | 204 | Operation: M.O.V.I.E. | Operation: F.A.S.T.-F.O.O.D. | October 24, 2003 |
| 18 | 205 | Operation: S.H.A.V.E. | Operation: O.O.M.P.P.A.H. | October 31, 2003 |
| 19 | 206 | Operation: F.L.A.V.O.R. | Operation: K.I.S.S. | November 7, 2003 |
| 20 | 207 | Operation: G.H.O.S.T. | Operation: F.U.G.I.T.I.V.E. | November 14, 2003 |
| 21 | 208 | Operation: T.H.E.-S.H.O.G.U.N. | Operation: C.O.L.L.E.G.E. | November 21, 2003 |
| 22 | 209 | Operation: R.E.P.O.R.T. | Operation: B.R.I.E.F. | December 5, 2003 |
| 23 | 210 | Operation: C.A.K.E.D.-T.W.O. | Operation: S.P.A.C.E. | December 12, 2003 |
| 24 | 211 | Operation: B.E.A.C.H. | Operation: U.N.D.E.R.C.O.V.E.R. | May 21, 2004 |
| 25 | 212 | Operation: D.O.G.F.I.G.H.T. | Operation: T.R.I.P. | May 28, 2004 |
| 26 | 213 | Operation: E.N.D. | June 4, 2004 | |
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Season 2 | Next Season S3 |