UPDATED 7/14/08!  Here's a list of over 90 summer camps and programs in the area with contact information, in no particular order.

1. Conejo Recreation and Park District camps, large variety, including surfing, science, engineering with Legos, sports, performing arts, cultural enrichment, archeology, african safari, basketball, cheerleading, engineering, fashion camp, golf, lacrosse, math, multimedia, photography, robots, day camps with different weekly themes, "little folks" day camps for ages 4-7, etc. 8:30 a.m. to 4:30 p.m. ages 6-14 in T.O. and Newbury Park www.crpd.org 805.495.2163
2. Boys & Girls Clubs of Conejo & Las Virgenes www.bgcconejo.org 805.449.1309
3. Ventura County Council Boy Scouts summer camps http://www.vccbsa.org/
4. iD Tech Camps at CLU/Pepperdine www.idTechCamps.com 888.709.8324
5. Camp Summertime at Calamigos Ranch in Agoura/Malibu for ages 4 to 14  www.campsummertime.com 818.706.7335
6. New West Symphony Summer Music Camp in Thousand Oaks 7/21-7/25 for 3rd-5th graders 805.777.7886
7. Silverfin Lacrosse Summer Clinic at Peppertree Park in Newbury Park, 6/24-8/5, ages 9-18, www.tolacrosse.com/silverfin or call 805.760.1171
8. Westlake Montessori School Summer Camp www.westlakemontessori.com/summer_camp.html 805.495.2962
9. City of Agoura Hills Department of Community Services summer camps (brochure available at http://ci.agoura-hills.ca.us/Index.aspx?page=70)
10. Skatelab Summer Camps in Simi Valley, http://www.skatelab.com/skatepark/camp.php 805.578.0040
11. Lazy "J" Ranch Camp in Malibu 140 acres in Malibu www.LazyJRanchCamp.com 310.457.5572
12. Little Oaks School Day Camp in Thousand Oaks, ages 4-12 www.littleoaksschool.com 805.495.5513
13. Phoenix Ranch Day Camp in Simi Valley, ages 5-13, 8:30 a.m. to 3 p.m. www.phoenixranch.org/camp.html 805.526.0136
14. Agoura Hills Dance summer day camps, ages 2-14, www.agouradance.com 818.991.8883
15. Fashion Design Camp for middle school students and up at Sheldon's Art Academy in Oak Park www.sheldonsartacademy.com 818.706.9444
16. Summer climbing camp at Boulderdash Indoor Rock Climbing in Thousand Oaks www.boulderdashclimbing.com 805.557.1300
17. Childrens Theatre Experience Summer Camp in Thousand Oaks, ages 8-18, www.ctexperience.com/programs/summerCamp.asp 800.514.2787
18. Fitness by the Sea Kids Camp in Malibu 6/23-8/29 ages 5-14 www.fitnessbythesea.com 310.459.2425
19. Camp Keystone Summer Day Camp in Agoura Hills www.campkeystone.com 818.889.2224
20. Art Camp in Agoura Hills, day camp for 7-11 year olds www.summerartacademy.com 818.386.1108
21. Broadway Theatre Camp 7/7-7-10, 7/14-7/24 ages 6+ www.talentlabonline.com 805.557.4942
22. Little Oaks School Day Camp 4 1/2 to 12 years www.littleoakschool.com 805.495.5513
23. Plank Institute Summer Science Camp at Pepperdine University, 1 week residential 8/3-8/8, for incoming 7th-9th graders, www.plankinstitute.com or 800.377.5265
24. Knuckleheads Gym Summer Fun Fitness Day Camp begins 6/16 www.knuckleheadsgym.com 805.499.8700
25. Academy of Dance and School of Performing Arts Summer Camp 7/14-7/24 and 8/11-8/21 in Thousand Oaks www.academyofdance.us 818.889.1515
26. Girl Scouts of Central Coast summer camps http://www.girlscoutsccc.org/ 800.822.2427
27. Chamberlains Performing & Fine Arts Summer Camp in Agoura Hills 7/21-8/16, ages 6-16 www.chamberlainspfaa.com 818.735.9464
28. Elvenstar Equestrian Day Camp in Moorpark ages 7+ www.elvenstar.com 805.529.2800
29. Eagles Soccer Club in Camarillo ages 6-14 June-Aug www.eaglessc.com 805.701.8203
30. Stages Theater Camp in Agoura ages 7-15, 6/23-7/26 www.campstages.com 805.374.8744
31. Brandi Chastain Soccer Camp for Girls & Steve Sampson Soccer Camp for Boys at CSUCI in July, ages 10-18 www.gsiacademy.com 805.757.3000
32. Camp Millionaire ages 10-13 7/7-7/11 Ventura www.creativewealthintl.org 805.957.1024
33. The Dance Company Summer Camp in Moorpark, ages 3+ http://home.earthlink.net/~reiaoo/pictureschedule/index.html 805.529.0165
34. Sports Camps in Malibu at Pepperdine 310.506.4264
35. Newbury Park High School Summer Dance Camp by NPHS Dance Team 7/28-8/1 ages 6-14 805.499.2806
36. Robotics Camp in Thousand Oaks 8/11-8/15, ages 8-14 9 a.m. to noon www.roboticsandthings.com 805.660.1809
37. Discovery Day Camp at EV Free Church in Newbury Park 6/23-8/15 grades 1-6 www.evfree.net 805.262.5000 x830
38. Atomix Athlete Summer Football Speed Camp in Agoura, ages 8-18 www.atomixathlete.com/em 818.636.5676
39. Thousand Oaks Teen Center has over 120 summer programs! www.thousandoaksteencenter.com 805.494.5156.  Click here for information about Teen Center excursions this summer.
40. Pam Rossi's Dance Ten summer camp in Moorpark, ages 3+  www.dance-ten.com 805.529.1958
41. Young Writers Camp at Cal Lutheran Univ, grades 4-9 http://128.111.207.251/scwrip/ywc/site/ywc_dates.html 805.893.5899
42. Young Set Summer Camp in Thousand Oaks, grades K-8 http://find.acacamps.org/cgi/details.cgi?id=103 805.495.2104
43. Rancho Simi Recreation and Park District Summer Day Camps in Simi and Oak Park www.rsrpd.org 805.584.4400 (Simi grades K-6) or 818.865.9304 (Oak Park grades PreK-5)
44. Triunfo YMCA Day Camps in Westlake Village www.triunfoymca.org/Triunfo/ 818.338.2314
45. Miller Family YMCA Day Camps in Dos Vientos (Newbury Park) www.millerymca.org/miller/ 805.480.0839, includes Mad Science Day Camps from 9 a.m. to noon for $220/week, 6/23-6/27 Robot Camp (7-12 yrs), 7/7-7/11 NASA Camp (7-12 yrs), 7/14-7/18 Detective Camp (6-12 yrs), 7/21-7/25 Robot Camp (7-12 yrs), 8/4-8/8 Detective Camp (6-12 yrs).  Also Summer Preschool Discovery Camp for potty-trained 2 1/2 to 5 yr old kids all summer either full-time (7 a.m. to 6 p.m.) or half-day (7 a.m. to noon).
46. Conejo Valley YMCA Day Camps in Thousand Oaks www.triunfoymca.org/conejo/ 805.523.7613, including "Catch a Wave" Surf Camp 7/9-7/13 (www.sevymca.org)
47. Camp Edwards at Big Bear Lake, Aug 18-22, grades 3 thru 6,  $275 (incluude transportation), offered through Miller Family YMCA 805.480.0309 and Triunfo YMCA at 818.707.9622
48. California Dynamites Summer Camp in Camarillo, ages 4-14 www.dynamitesgymnastics.com 805.482.8000
49. Monarch's Gymnastics Summer Camps in Newbury Park and Agoura Hills, www.monarchsgym.com 805.375.4663 and 818.889.3634
50. Total Tennis Academy Summer Camp, ages 4-18 805.495.0111
51. Ventura Surf School Summer Day Camp, ages 8+ www.venturasurfschool.com 805.218.1484
52. The Little Gym in Thousand Oaks summer camps http://www.thelittlegym.com/gym/announce.aspx?gymid=335 805.492.8020
53. Westlake Sports Camps at Westlake H.S., ages 5-13 www.westlakesportscamp.org 805.660.1254
54. Oaks Soccer Camp in Thousand Oaks, ages 5-14 www.oakssoccercamp.com 818.575.9122
55. Team Soccer Direct Camps at Cal Lutheran University in Thousand Oaks, all ages www.teamsoccerdirect.com
56. NPHS Summer Volleyball Camp, ages 8 to 16, week of Aug 4th, www.blackcatvolleyball.com 805.499.8068
57. Goodenough Farms Horse Riding Summer Camps, 4 day intensive learn to ride sessions including a half day of riding, followed by lunch, swimming and tennis, will be offered in June and July for $395 per session. Space is limited.  Call 805.524.2444 or email info@goodenoughfarms.com.
58. Ojai Valley School has an environmental studies summer camp, a junior camp for ages 3-7, lower camp for ages 8-14, performing arts camp for ages 14-18, etc.  www.ovs.org 805.646.1423
59. Paiva Dance Academy Happy Feed Children's Dance Camp in Thousand Oaks, ages 6-10, 7/7-7/18 and 7/21-8/1, www.paivadanceacademy.com or 805.496.7620
60. Oaks Christian Summer Programs for kids (sports camps) ages 5-14 and summer school grades 6-12, http://www.oakschristian.org/academics/summer.aspx or 818.575.9284
61. C.A.T.S (Creative Acting Theater School) in locations throughout the Conejo Valley and Ventura County for kids of all ages, www.catssummercamps.com
62. Santa Barbara Museum of Natural History & Ty Warner Sea Center Summer Camps for kids ages 4-12, topics include fossils and dinosaurs, astronomy, marine animals, nature and ecology, anthropology, oceanology, http://www.sbnature.org/education/natadv.php or 805.682.4711 x171
63. Thousand Oaks High School Volleyball Camps for 4th-8th grade boys and girls and 9th grade girls at TOHS, www.tohs.org/Sports_PDFs/VBAPPS.doc, June and July, 805.660.9928
64. Fusion Football Camp at NPHS, 6/16-6/21, www.fusionfootballclinic.com, 805.889.7324
65. Girls' Empowerment Center summer camps in July and August, www.girlsempowermentcenter.org, 805.230.3807
66. City of Agoura Summer Shuttle, Beach Bus and Junior Lifeguard Express for ages 10-15, http://ci.agoura-hills.ca.us/Index.aspx?page=67  (only $1 each way! a bargain!)  818.597.7361
67. Advantage Basketball Camps, Ballhandling and Shooting Camp at Agoura High School, 6/30-7/4 8 a.m. to 2 p.m., www.advantagebasketball.com or 310.903.6473
68. Surf Laws co Summer Surf Camps at Ventura/Oxnard beaches, 8 sessions, 6/23-8/22 (except 6/30-7/4), ages 9-16, $375/week, www.surflaws.com, 805.984.0430
69. America's Teaching Zoo at Moorpark College, Junior Safari Zoo Camp, ages 6-14, various sessions all summer, http://www.moorparkcollege.edu/current_students/teaching_zoo/junior_zoo_info.shtml or call 805.378.1441
70. Santa Barbara Zoo Camps for ages 3 to entering 7th grade, www.santabarbarazoo.org/zoocamps.asp or 805.962.5339
71. Ventura College Sports Camps (baseball, football, soccer, cheer, softball, swim, tennis, volleyball, basketball), www.vcsportscamps.com or 805.654.6338
72. Pacific Camps is a non-profit agency with camps throughout Ventura County (including T.O. and Newbury Park) for kids ages 4-12, www.pacificcamps.com for details
73. Hitting Zone Pro Baseball Camps at Newbury Park High School, 6 weeks begins 6/23, ages 5 to 14, www.hittingzone1.com orr 818.707.ZONE (9663)
74. West Coast Baseball School in Agoura, 7/14-7/18 and 8/11-8/15, www.westcoastbaseballschool.com or 818.865.9227
75. Foxfield Resident Horse Training Summer Camp in Lake Sherwood for girls ages 9 to 16, 5 sessions from June thru Aug, www.foxfield.com or 805.495.5515
76. Aloha Beach and Surf Camps for ages 5 to 15, www.alohabeachcamp.com or 818.932.4600
77. CLU Summer Vocal Institute camp for aspiring singers ages 12-18, 7/6-7/12, www.callutheran.edu.summervocalinstitute or 805.375.5735
78. LU Dawg Baseball Camp at CLU, 1 week camps Jun-Aug, ages 6-14, www.ludawg.com or 805.493.3398
79. Cheer Rock Summer Programs in Newbury Park, age 4-14, www.cheerrock.com or 805.498.3059
80. Let's Get Cooking! Summer Teen Culinary Camps in Westlake Village, ages 10-16, http://www.letsgetcookin.com/docs2/teencamp.html  or 818.991.3940
81. Adventure Weeks Day Camp at Calvary Community Church in Westlake Village, grades 1-6, 6/16-8/15, fun trips each Thursday, http://www.calvarycc.org/pdfs/aw2008.pdf or 818.575.2233
82. Spotlight Summer Camp at Calvary Community Church in Westlake Village, creative arts for grades 1-12, 8/11-8/15 half day sessions, call 818.575.2211 for info.
83. Naval Base Ventura County Jr. Guards summer program for youths ages 10 and up, learn fundamental lifeguarding skills, 2 3-week sessions, 6/23-7/11 and 7/21-8/8, call NBVC Port Hueneme at 805.982.4752 or NBVC Point Mugu at 805.989.7788
84. Ferrante Ranch Summer Horse Camps, ages 5 and up, Somis, 6/23-6/26 and 8/11-8/14, www.ferranteranch.com or 805.386.4777
85. City of Moorpark Recreation Division Summer Camps...Lego Camps, Mad Science Camps, Away We Go Kindercamp, Art Camps, Tennis Camp, Soccer Camps, etc. etc., http://ci.moorpark.ca.us/moorparkcity/xtra/img/summerbrochure.pdf or 805.517.6300
86. Ventura Makos Surf Camp, www.venturasurfcamp.com or 805.312.0713
87. Pleasant Valley Aquatic Center Junior Lifeguard Camp (ages 11-14) and H20 on the Go Camp (ages 8-12) in Camarillo, www.pvrpd.org or 805.482.1996
88. Conejo Valley Summer Music Camp (20th Annual), ages 11-15, all instruments, meets at TOHS, 6/30-7/11 and 7/14-7/24, www.hillcrestarts.com or 805.381.2747
89. Young Musicians Band Camp (11th Annual) at Hillcrest Center for the Arts, 5th-8th graders, 6/16-6/27 and 8/11-8/22, limited to 35 musicians, www.hillcrestarts.com or 805.381.2747
90. Young at Art Studios Summer Camps (ages 5+) and Workshops (ages 10+) in Simi, Camarillo, Moorpark, www.youngatartstudios.com or 805.529.6274
91. La Petite Party Summer Camp in Thousand Oaks, M/W/F half days, www.lapetiteparty.com or 805.494.3151
92. California Cartwheel Center in Newbury Park, 4 1-week, half day summer camps, ages 4-7 and 7-12, www.californiacartwheelcenter.com or 805.499.5228
93. Surfclass Summer Camps in Ventura, www.surfclass.com/surf_camps.html